Before they do the clutch I would investigate that output shaft play and leak
could be a failure there, with one axle disconnected it will freewheel like a failed clutch
Yep, I thought one of the axles had let go, thats how it felt. I'll dig in a bit further with them over the phone on monday, make sure they crossed their Ts and dotted their Is with that clutch diagnosis.
Its hard for me to imagine a clutch just completely letting go without some major peices breaking in there which would create "SOME" noise. This is totally silent.