In most cases I would be against this. Saving seats is the most childish shit in the world. The last person to have a justifiable reason for saving their seat was the blind girl in middle school that had a personal handler. You get up then your chair is fair game. That's not only how being an adult works, but it's just how life in general works. It's first come-first served, not first come-first owned. When you leave that chair you leave the ability to be served with it. You give someone an inch then they are going to take it, and that shouldn't change just because someone tilted their seat back up to meet the edge of the table. This is pretty much the reason I was so bad at "fives" back in the day. I simply didn't believe in the entire premise of the game to begin with. If you have to piss then you can shake the excess drips off into your boxers as you're standing in shame of your small bladder. If that seat was so important to you then you would have held it in like a man, instead of letting it sit there ripe for the taking.
With that said, I love this move. Mike Cammalleri didn't save his seat. He simply scared people away from it. His teeth weren't a seat saver, they were a seat deterrent. His teammates could've taken it if they wanted. Like, I said before, attempting to save your seat shows that you really didn't want it that bad. Well, nothing speaks to Mike Cammalleri's overwhelming desire to retain his place at the table then his decision to put a temporary part of his face on said table. The only way for someone to prove they wanted that place setting more than Cammy would be to move his slimy ass fangs, and if they did then they would have been justified in doing so. It's basically like licking your food so that someone doesn't take a bite when you're gone, and what's more mature and responsible than that?
P.S. This story is reason #346 that I love this team.