Now, as a CFII, I will say the correct answer is to proceed along the entire route, evaluating altitude and routing at each fix to the final destination.
We had a discussion with Orlando controllers last year about this issue and most of them agreed that they considered a 7600 squalk in IMC a crap shoot. Without saying to do this, they did indicate that if you are very close to your departure airport, it makes it so much easier on them if you turn back. Remember that they have to clear your path for the entire route!
It really is a PIC thing and without being in the situation or having more details, it's easy to talk about on the ground.
I alway hate these FSDO catch 22 questions for that reason!