A group of paddlers were running Yule Creek on June 20, shooting for a kayak DVD. We ran into them in Marble while we were up there for the Mill Waterfall.
So, apparently it is running now. Those guys said there was still plenty of snow above the Crystal and they expect it to run late.
They ran the Devil's Punch Bowls a day or two before and mentioned a snowbridge at higher elevations.
The mill waterfall sure is stunning. It looks a lot better in person than it does in the postcards. The shuttle is a brutal 4x4 trek though. Definitely take a look at it if you are driving a 4x4 and already up in the Yule Creek area.
After we scouted it, we went on safari looking for one of our friends who got lost on the way there. We ended up not dropping the falls because of our search, but we will do it this weekend.
Just thought I would offer what little I know on the subject since nobody else has answered you yet.