I used to go up to the Tuolumne Meadows area (just west of White Wolf)every September (to fish, not ride). The crowds are still there, though not as thick. However, you are still likely to have the motorhome issue.

It's a pretty steep descent. I'd probably do it, as long as I didn't have to ride back up. Be ready to take the lane and to have cars (and motorhomes) follow you for quite some time before they can pass.