obviously this guy hasn't been in KP enough. Doesn't matter if it's your guild run, filling in for some one in a guild run, a pug run, or a gf run. More than 80% of the time someone is going to pull one of those rooms. If not multiple times in a row on some runs. It happens and even the best of us do it sometimes.
I've run it dozens of times through GF, usually 3+ people call out before the room comes up and no one goes in.