In the Alien matchup (as kenjustsu) - I realised two useful things:
1. If you end your combo in df1 (more hit advantage than the higher damage enders), walk forward slightly, and b1 this will armour break the ex OH flip. Even if they don't wake up, you are only -1. Also hit confirmable (but hard - need to be on point, and buffer the next special)
2. If you counterpoke with b1 after blocking regular OH flip, and he tries to ex OH flip at negative frames, b1 will armour break. B1 will trade or beat any of his normals.
@Pig Of The Hut - you may already be aware, but tagging you in case you are not.