Word from the Utahrafters list is yes.
Also this from Rich Phillips who's apparently down there now opening up shop:
"For anyone trying to get in to Westwater this weekend, the "shortcut"
is heavily rutted and appears impassible. There is still a moderate
snow cover in the camp area (although it may melt considerably today)
and the ramp is very muddy and will be slick for those launching with
trailers. The road itself has deteriorated quite a bit, and there are
still sheep grazing across the road here and there.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse