I've uploaded a "dirty" patch to rwparris2's Hulu plugin, which decrypts the PID and restores functionality for the time being. You can grab it from
here if you're interested.
EDIT: You can download the patched plugin from
here.
EDIT2:
rwparris2 is the author of the Hulu plugin (and
many other awesome plugins), not me, so please direct all praise his way.