This smacks of Manziel all over again. It's all about drug and alcohol abuse, obviously.
Betcha this is the classic case of kid that for the first time has some money, and this is what he's decided to spend it on. Partying. Too bad.

The only other possibility is a mental health issue such as bipolar; but this sounds more like the irresponsibility of drugs than it does mood swings.

Either way, Rams need to cut bait. Mason is an afterthought with Gurley on board, and Cunningham is a much better 3rd down back.
They will. There's no point to messing with all the uncertainty.