I've been testing on KF (because her wakeup is stupid).
I also tried this on myself to the best of my ability, and I was able to Sword Flip out of the B2 trap.
This looks good, but I feel like the timings are a bit strict. I'm trying to find a combo that leaves you at a greater frame advantage right now. I'm not entirely sure, but I think B1U2, D2, F3, D2 xx Spin gives more than the one you posted. Since you're probably better than me at this right now, you wanna test it out and confirm?
EDIT: Okay, so I'm getting slightly better at the timing, but I think omitting that F3 increases the frame advantage you get, plus I find it more consistent than the F3 combo. Anyone want to test this as well?