Have you looked in the .pvm (virtual machine bundle) for anything related to pause/resume state? When I do a suspend in Parallels Desktop 5, I see the following files:
Code:
{76d057e5-719d-4ea7-abed-2032b1b944c4}.mem
config.sav
suspended.png
Maybe if you delete them, it won't be suspended anymore. I haven't tried it. Maybe your disk will need fixing afterward. Duplicate your .pvm before messing with it.