WOAH! Coolest sequence break I've ever seen lol. Not too sure how useful it is but you can definitely get sprint early with it, you're just trapped in the town lol. Tempted to leave it in but I'll probably fix it once the jam ends.
EDIT: Okay so I just spent around 10 minutes playing around with this and I'm definitely keeping it haha. Doesn't look like you can really break the game apart from getting softlocked in the town, and it's actually possible to beat the game sprintless by staying clipped in the walls and travelling across the whole map. INCREDIBLY fun speedrun category lol.
Thanks for showing!
Glad to hear you're keeping it in, I definitely had fun with it :). There are a couple of ways to get soft locked though - if you move to the right of the piano room or TV room, there will be an empty version of the rooms with the same collisions as the filled rooms. I did manage to break out of the empty piano room one or twice, but couldn't manage it for the empty TV room; It kept on looping back on itself.