I found the other post. Nice write up.
I'll check the sending unit. My first guess is that I bent something or that the float arm popped out of the wiper bracket rather than the wiper itself. I do have 1000 grit wet or dry paper. Personal experience here on a similar repair to an e46.
In that case the float arm popped out and was pivoting at will. I'll wait just a bit because when I filled the tank after the event, I topped it off to see how far down I was when I ran out of gas. Bone dry I'm pretty sure.