When I was dying test swatches of Antron, I used the blow dryer to see where I was without any problems. Let me first say that I have only dyed about two yards in my life, so my knowledge on the subject is vast, but I say go for it. Logically, it couldn't hurt.
Anywho, my first two attempts fell short of my desired goal because my dye bath was too strong. (Imagine using a salmon dye and getting the prettiest shade of crimson.
) I finally nailed it in the washing machine. I then dried the fleece using my clothes dryer set on the gentle cycle. That may be a no-no, but I am happy with the results and no piling.
Go to Master Buck. He'll teach you the ways of the fleece.