Re: Ambiguous Circumstances Surrounding My 'Termination'
I don't see undue influence in this situation. Whether you signed the form or not in at-will employment you can be terminated at any time for any reason except a reason prohibited by law (ie age, religion, gender) or unless you have a binding employment contract or CBA to the contrary. Also, it would not have been illegal to not offer you a job if you wouldn't sign the form - I doubt if you were singled out to sign the form due to being a member of a protected "class" (age, religion, race).
During the unemployment appeal, all you can do is answer the questions asked you truthfully. This may be an unfair termination (if you didn't yourself give notice to quit) but not an illegal one.
Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around.