MK, if you followed my steps I'm sorry!
I got in to some pretty heavy duty postholing higher up on the couloir, and exited early on to the rock--it was kind of a miserable transition, as I was below the standard exit, and the route was messy, indirect, and loose, at least with a thin veneer of wet snow on a lot of it.
That was a weird day. I was flying up until that point, and the snow was wonderful up until about 3/4s of the way up the couloir, and then, as if a light switch got turned off, I felt like my limbs turned to mud, and the snow went to total crap; groped my way to the summit from there.
I have to admit though that that glissade was one of the best ever, plus a number of shorter glissades further down helped things along.