No matter which mascot it is, I really don't see the problem with TD celebrations.
Guys come in every week and play their hearts out, and they should be allowed to celebrate. I can understand if they did something absurd like running up and down the aisles high-fiving people, but a chest bump? The NFL is an embarassment to itself sometimes, and they don't even see it.
Let the guys have fun. I personally have yet to meet someone who opposes TD celebrations. For the most part, they're creative and entertaining. I actually wish more guys would blow off the fines and do it anyway like TO does.
The league needs to loosen up and quit trying to convince themselves that it's a business, when it is completely for entertainment and bragging rights. The only business aspect is the money.
I doubt if a sponsor ever pulled their sponsorship because someone did a TD celebration.