You can tech roll back 112 when you get hit by it in the air.
I was experimenting with this last night, try these set ups.
113 Back 3 in a corner with NO transition, up grapple to bring them down into a hard knockdown, back 2, jump back 3. This is meter less but it was difficult for me to get 100% of the time.
There's also this when you get close to or are in the same kind of corner:
113, dash, 123 3xxgrapple MB, back 3, up grapple. back 2, jump back 3.
And the last useful one I found was after you hit someone with the cross up forward 3 in the corner (ANY CORNER) :
Neutral jump 2, back 2xxUp grapple. back2 jump back 3