Not that I care one way or another, but do you understand the implications and ramifications of this Frank offering to purchase your revoked shares? You are in territory that I'm not sure either one of you really want to be in.
Before you do anything, I suggest contacting your brokerage and asking them exactly what it is going to take monetarily to get your revoked shares in certificate form, if they will even do that. You may be better off just taking a complete write-off. GLTY whatever way you go.