If you're talking about moving to a small-midsized firm, NOT bloody likely. Small/mid-sized firms hold a stigma against BIGLAW associates for two main reasons. (1) they are used to making more money than small/mid-sized firms are willing to pay. (2) BIGLAW associates do not have the skill level necessary.
That's patently false. It's very easy to move from BIGLAW to a small or midsized firm, as anyone who has worked in BIGLAW can readily attest. Look through the bios at a reasonably competent midlaw firm and you'll see that virtually all of them lateraled over from BIGLAW.