Earlier I mentioned it might make one more physically sensitive and less likely to over-think. Another part of it is my time sense is subtly altered. We played things with faster tempi, but I felt I had all the time in world to vary banjo strums, both to make some more arpeggio like and to make more subtle syncopations.
I have the feeling if I could cultivate this expanded sense of time, my playing would be remarkably better. It may just be that feeling so miserable, I'm not as hyper about being "right" in my playing.