Misha--
Three words for you: Make other plans.
I wouldn't even begin to think of going up there for another month or two. Our easy 3 night trip turned into a 4 night fiasco. We lost the trail in the middle of day 2 and spent the rest of the time trying to find it again without luck. We actually spent an entire day holed up in our tents waiting out a snowstorm. I can't begin to tell you what we went through trying to find our way out of there. Postholing into many feet of snow, climbing over rocks, skirting around cliffs, plowing through brambles and crossing streams. The runoff from melting snow keeps everything soggy. We are fortunate that our group made it out without injury. Let me just say it's nice to be dry and warm again.
The only way to go successfully would require full-on mountaineering conditions. A four season winter tent, a synthetic 15 degree or warmer sleeping bag, lots of warm clothes, full rain gear, full winter boots, snowshoes (crampons were useless), a great map and a GPS pre-programmed with many detailed waypoints. (We found out later from the Main Ranger that the trail is hard to find and hike even in summer, so you can forget about it now!)
So stick to day-hikes at low elevations or go to Disney. Forget the Vernon Loop.