What do you think? 2nd tech / ejection-worthy? Just a slight bump, but you can tell he did it intentionally...
It wasn't just the bump. A reporter asked the ref after the game and apparently Wall supplemented the bump with some choice language.
Personally, I would have tossed 'em too. That bump was designed to send a message. You don't bump the boss in any setting I know of. And the refs are boss for that 2 hours.