highly doubt that would be physically possible on a truly vertical wall. AFAIK a shove-it has been done, but with zero pop. as soon as you pop, you're getting too far away from the wall and would start falling vertically down into the bank.
some can do a tre flip with zero pop, but to be that fast and to keep you feet in place as you go from the bank into the wall would really be incredibly hard. daewon is probably the only one that could even attempt something like that