He was already injured this offseason - a back issue, which i would do a DEEP dive into if i'm an NFL team. His acting up isn't new though. He's been flagged and ejected before. If he's lost control that many times in games, you have to assume it's happened behind the scenes as well.
I thought WRs had the headcase label locked up. Stewart and Colin Simmons are trying to reset that standard, Stewart with all this antics, and Simmons acting his he was ****ing on a player. Do these guys think NFL teams want to draft a player high and pay him a lot when they can't trust them?