He also had to consider the falling motion of the Cyclops and accommodate it into his calculations now that the Cyclops doesn't have any arm to support it from falling. In summary, he had to block the spikes and grab the rhino all the while falling on his face because the Cyclops is leaning forward without any support.
What he did was very dangerous. Failure would have caused him to lose his life for nothing but he knew he could do it and he did it. So he expected this outcome. He also expected what happened next as he lay on the ground recovering.
Injury to the soul body is different from injury to mana entities and weaker entities. Those entities have a separation of body and soul. That means the mind can ignore the pain to the body and continue operating properly if the person is resilient enough. A mana entity can have their arm cut off and will not suffer any decrease in their prowess. They won't go down until you crush their head where their soul space is. It is not the same for transcendents and above.
An injured arm is a loss to both the body and the soul of a transcendent. Joining the potential of body and soul to break the limit of growth also means the two formerly separate parts of existence are fused and get to share both good and bad. The good is nice and the bad is very painful. Losing a part of your body means losing a part of your soul and soul injuries are very painful. The pain cannot be ignored. It leads to a loss of concentration and control.
The fusion of body and soul enables transcendents to have perfect control of their body and emotions because the soul and the mind gain perfect control of the body. So losing a part of the soul means losing control. The loss of control might be minimal but that means that perfect control becomes imperfect control. If the injury is very bad, like losing half of your body, then you will lose more than control of your body. It will actually be very difficult for you to form coherent thoughts apart from "This hurts so bad."
Fortunately, the bad comes with the good. Injury to the soul used to be very difficult and sometimes almost impossible to heal without special items but that has changed with its fusion with the body. The soul can regenerate just like the body. That means that he will recover and he will recover very fast if he has access to a lot of Origin energy.
He just happens to have a lot of Origin energy so he needs a small amount of time and he will be up on his feet kicking again. Unfortunately, there are some people that aren't going to give him that time. A lot of people were watching his fight. That means a lot of them saw the ending of the fight. Some of them don't know exactly how it ended. They only saw some purple spikes hit the Cyclops and then there was the global and local announcement of his feats. But others saw clearly that he might be hit badly and that the Cyclops scattered in a quick disorderly manner.
An injured Soverick is a good opportunity for a lot of people so a lot of people with not-so-good intentions are rushing towards his position. They are not rushing towards him for a chat. Some of these people don't even know if he is injured for sure. They are just hoping that he is and they are willing to risk death to confirm it because if he is injured, then they just might be able to put him down.
There are a lot of reasons to try and kill Soverick. There are motivations of hatred, love, and competition. There's also the fact that whoever kills him gets to receive the designation of KING this early into the competition. They didn't have a chance at acquiring that designation before when he was very healthy but his injury has certainly increased that chance. Besides, they don't have much to lose. They can't die permanently anyway.
He expected all of this so he wasn't surprised or startled when he heard battle sage monkeys congregating in his position. He can hear the vibrations in the rhythm of momentum which indicates that more than a thousand people have come to kill a giant while the giant is down. They found him lying on the ground unmoving. All four of his eyes are unfocused doing their thing while his body is recovering.
No one attacked him despite his vulnerable position. He is lying in a demolished area cleared of trees because of his recent fight. Their numbers continued to increase as they surrounded him but no one came closer than 100 meters to him and no one attacked. Their hesitance is because of the surprise that the Child of the plane is actually injured and because of the uncertainty of his prowess. They don't know if he is really weakened and if he is, they don't know how weakened he really is. They need him to be very weakened because he doesn't need a lot of his power to crush them.
A weakened giant can still crush an ant. He doesn't even need to try. He can just fall on the ant as he is recovering. So Soverick's body that is missing more than 50% of it is still not assuring to them. If it were another person, they would have hounded that person but Soverick is the child of the plane. Surely he must have something up his sleeve.
The most important reason why they held back from being the first to attack him is because of his nonchalant face. He looked calm as he lay there as if he isn't worried at all. Could it be a false show of bravado or is he really not worried about them? He may be bluffing. They are unsure. So they held back.