Yes, had it happened to me as well. It didn't help that I was 2,5 hours drive from home either. Luckily it didn't rain and it was April.
Well, the glass went down and then it refused to go up, neither by using the key nor the switch. I opened the back part (Phillips screws), tried to move it, shake it, whatever, but it did not help. So I drove on, then at some stop I slammed the outside part of the gate with my palm (very technical move I know), BUT - then after putting the key in and twisting it the glass actually went up! This is one of the things I have to get around to repairing.