It occasionally happens that an owner doesn't pay HOA fees when they get into financial trouble, and when a lender takes back the property through foreclosure, that lender is usually on the hook to pay the fees in order to make it possible to re-sell the property. Whether that lender has any legal right to later go after you, the prior owner, for the unpaid fees, I am not sure. I, too, would recommend that you talk to a lawyer.
Some lawyers will answer general questions like yours over the phone at no charge. If you aren't able to get your questions answered free, the Oregon State Bar offers a great service where they will connect you with a real estate lawyer for a half-hour consultation for $35. You can contact the bar association's Lawyer Referral Service toll free at 1-800-452-7636, or submit a request for an LRS referral online at: http://www.osbar.org/public/ris/lrsform.html
Best of Luck!
I wish you well with your journey, It will get better.