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.
