So as far as rombanks go, the Swd Tech Ready Stance and Resilient Morph touch banks C1 and C2, and they are both fairly small patches. As far as I know, TWUE doesn't do anything to that part of the code. The Header would be the first thing I checked, but beyond that, I'd made sure that you were using the 1.0 version of the rom. The 1.1 version does a bit of byte shifting in the C2 bank, so anything that affects battle mechanics is likely to cause the game to freeze during battle.