Take a look at this photo I took from the Jackson Hole tram yesterday morning. That is Corbet's Couloir as of May 30, 2011.
There's nothing in the photo to provide any scale, but that cornice is humongous. The rock wall in the center of the photos is probably fifteen feet high at least. I have no idea how big that drop would be right now.
I'm pretty sure I've never seen it that big in 40+ years of skiing here.