He had his chance to either cooperate with the Committee and come and testify what he knew, or cooperate with the Department of Justice in their ongoing investigation. It is disingenuous to play both sides, trying to curry favor with Trump, walk a middle line, and get his supporters if Trump implodes, yet not provide any cooperation to ongoing investigations and prosecutorial actions, and then just go write a book and talk about it.
Pence is a lukewarm individual who is probably not loved by anyone on any side these days. I think we have heard enough.
Pence is a liar, traitor, and son of a bitch.