^^Meh, I still get a semi infinite even without jab locks. Side B->footstool->dair (miss them)-> turn around jab (jab reset)->repeat until they are at too high a percentage for side B to combo into footstool.
And there was some talk about jab locks being allowed under the "standard" codeset, since everyone is generally getting better at teching anyway (of course, I would never allow it since I know how broken some jab lock setups could be)
edit: The infinite works, but the setup into the infinite doesn't (footstool->dair isn't fast enough to get the jab lock). I have another jablock setup, but it's unreliable because it's partially dependent on my opponent's DI. It's side B->footstool->up B->auto cancel dair->jab lock. The problem is if they DI behind where Sonic is facing between the footstool and the up B spring hitting them, the spring sends them the wrong way and the only thing Sonic can follow up with is a dash attack (which leads to a jab lock if they don't tech, but it's easy to tech).