Well guys, I hope you all made it back okay.
To make a long story short, rangers don't accept ignorance as an excuse. - A word of warning... if a well-traveled trail isn't on the maps, and it is unmarked (as in, no signage at all)... just assume that it's off-limits. That's my quick lesson for the day.
All in all, not a great ride. Actually, my all time worst. The trail was fun, however, realized my 4WD wasn't working right (again?!), got a ticket, wasted an hour in 27 degree wind while waiting for said ticket, and had to turn back due to a river full of 6" thick ice slabs. Sorry about the crappy day guys.
I got a few pictures... I'll see if I can upload them soon.