We don't really want to edit the bones to keep it wifi safe, and removing the quill movement altogether will cause issues with PSAs that utilize the quills. Project M's Sonic up-throw comes to mind, but there may be others as well.
I understand.Why would you want his quills static? It just doesn't feel right that way.
I think it looked perfectly fine in this video:
Super Smash Bros. 4 - Sonic Trailer |
Actually the quills do move but only when he jumps.