Ok, this is going by memory but that still can't be the handicapped stall. The HA stall has a sink with mirror and towel dispenser in the corner where the stall wall and tile wall meet. I'd expect to see a glimmer of at least one from that angle.
Also, for an
ECV to hit the wall at that angle it would have to be half the normal size and hit it at a 90 degree angle.
You enter the bathroom, go straight back and turn right. The HA stall is at the end of the passageway with a door at the end. You drive straight in then shut the door behind you. The commode and sink are along the wall to your right.
With the amount of space in that stall I can't see hitting the stall wall as you maneuvered. The opposite wall yes, but not the stalls. You'd take out the commode and sink first.