You can't make this stuff up. The Manziel stories keep coming and each one is more ridiculous than the one before it.
Not that he was going to get another shot in the NFL anytime soon, but this can't help at all.
It's one thing to slap around your girlfriend, if there isn't video of it, you'll probably get another chance. But to show up at practice drunk, there aren't many teams that will put up with that.