Is this undue influence?

The contract you have signed appears unenforceable because it fails on all important elements required to make it enforceable. A contract requires Offer, Acceptance of Offer, and Consideration plus lack of any defenses that can be raised about its formation (i.e. made under Duress in this case) First, you do not mention what was offered? (i.e. if you do this, I'll do that) what if anything you presumably get in return? (if you do all of the above) Second, Acceptance there isn't one because ther isn't any Offer to accept, and Third, Consideration (i.e. the bargained for exchange) what exactly you get from entering/binding yourself to its terms. Here, notwithstanding the above and additionally, anyone who thinks they have a valid enforceable contract should face the defense of Duress (in its formation) that you can raise at any legal proceeding. Most importantly, Every contract executed in Masssachusetts comes with the Implied Duty to Negotitate in Good Faith, something not adhered to in this case.