[jyl]

I assume you gave couple weeks' notice, but they frog-marched you out immediately?

Not unheard of, although kind of shortsighted of them I think. Everyone is worried about employee sabotage but presumably you had plenty of chance to do mischief before too.

If you have any time between today and when you start at the new place, I'd call your former boss, remind him of the project, and offer to come in and brief them to help w/ the transition. Maybe in a nice email that also says how you enjoyed working for the company, and hope to stay friends with all the good people there, etc etc. At least I'd make the offer.

But once you've started working at the new place, you can't do that - unless your new company agrees, and personally I think that opens a can of worms so I wouldn't ask.