Thanks for the reply and sorry to hear about your accident .Beware whiplash and back muscle spasms - get yourself checked out by a doctor.
On the issue of my drivetrain troubles , I have found the trouble . The nut which holds the yoke in place on the end of the tranny spline backed off allowing the output shaft (if thats what's it called )to disengage . Should have it back together in the morning .
I'm wondering if this is a common problem ?