i had some close try like this, but i dont know
https://www.youtube.com/watch?v=inj5R149Hs4
It's close, but far away enough to think it may not be possible. It's still worth hitting for a few hours more though, just to be sure :p
It sure does look like a bitch though, needing the bump off the curb and then the lucky bounce off the wall, and it looks to me like you got the best wall ride you could out of that jump. Do you think you could get more speed?
It's a nice find, either way. I've not seen that attempted before.