Remember that test and deca both have really long half lives. I don't think it's the proviron but rather the test and deca are starting to kick in now and you weren't noticing them before.
Proviron is an anabolic. It's the androgenic properties of steroids that cause increases in aggression, strength etc.
I think you are just noticing the test kick in. Especially since you are only using 25mg of proviron. That's a pretty low dose.