What's an Author to Do?

I'm wishing I'm not harboring a vain hope that an occasional writer reads these posts. I'd like to ask what advice one might give when the options offered by a small publisher are: (1)stick it out, or (2)take the book back--and decide within 72 hours. The contract is now over 2 1/2 years old, and no release date suggested, let alone promised. I understand (all too well) that I blew it when I signed on, but that's water over the dam. Any suggestions now?