this happened at coventry in the late 70's and, guess what, it was palace again. i was at the match at the opposite end of the ground when clive allen blasted one in from a 25 yard free kick. it hit the stantion and came out. everyone and i mean everyone except the ref could see it was a goal, even from the opposite end. the players reactions gave most of it away. palace lost 3-2 as well.
that one yesterday was much worse, imho.