He had messed up!
That was Aiden's thoughts after he woke up from his sleep. Although he knew that there was bound to be repercussions of his actions, the thought that he might just become unconscious during the climax of the scene never crossed his mind.
So, when he had woken up in the hospital, a lot of worried faces were in front of him.
The cast and important members of the crew had stayed at the hospital and aside from them, there was also Wade and Tom who were with him during the whole shooting.
All of them were glad after seeing that he was fine.
According to the doctors, his body was also fine and he had just 'exhausted' himself.
Jeremy and Wade had asked him what exactly had happened and they could only answer that he got too much into the character and had started imagining things so vividly that in the end, they had affected him.