Figured it out. Just open the pangu app and click the circle as if you were jailbreaking again. Then open Cydia and remove tweak.Anyone having problems with crashing? I can't open it anymore and I can't place my phone into safe mode.
I must've installed a tweak that's not compatible but I can't uninstall it because I can't access Cydia.
TetherMe was updated last night to fix an issue that was found.I only use a Jailbreak for Activator and TetherMe. However, since those apps aren't compatible with iOS 9.3.3 yet I think I will wait for the updates for those apps to be compatible first before Jailbreaking.