Chuck in beginning season 5-spoiler

In season 5 opener of gossip girl yes, then zero chuck is a dare devil. He jumos off a building as a stunt on a movie set and falls off a motorcycle, among other things. Was he emotionally numb, prior to falling of the motircycle?? Tge next episode; when Dan finds hints paying guys to beat him up, he says he doesn't feel anything when he sees blaie and louis, or falling off a bike, or jumping off a building*which happened prior to the motircycle). Has this been an all summer thing since the end of 4, is that why in 5 hes saying yes to everything?