As others have said, probably yes. You made an agreement with other owners to pay your portion of the maintenance for your complex. It's a shame that you ran into difficulties and can't keep your place, but the other owners shouldn't have to pay more due to your difficulties.
It may be possible to settle for less than the full amount, talk to the board and consult with an attorney. If you need a referral to a local lawyer, let me know.
Buy a home after foreclosure, short sale or deed-in-lieu-of expert
Helping families/people that have lost their homes get back into another in as little as 6 months
I pretty much agree with everyone already. You really should try & work something out with them if you can. I assume since you have not been paying the mortgage you may even have some money to do that with.
If you want to learn more about stuff like this go to my blog: http://www.bellevueshortsaleblog.com
As always, contact an attorney. They may be able to negotiate a lesser settlement with the association.