yeah but it's not about what he was saying as much as it is about the way he was saying it. Like emfleek I have also spent some time in the mental health field. I worked in a hospital psychiatric ward for a while and have spent a lot of time around highly depressed people. He was most likely just being taken in for a psychiatric evaluation like he stated.
I've got to say that his demeanor in that interview and his actions afterward fit the bill. He has also said numerous times in interviews that he was the fat kid who got bullied when he was younger. That stuff seems like nothing in passing but he could really have some deep unresolved issues that relate back to his childhood. Typically when people repress that stuff they learn to be ok for stretches of time until a trigger (like losing the world championship) sets them off and they spiral down very quickly. He's probably been going up and down for a long time, hopefully this is the one that gets him the help he needs.
Really hope he can battle his demons and get back to busting heads. Normally I'm pretty unsympathetic but depression is much worse than any amount of physical pain. I really feel bad for him.