Having not read or heard from the other side of this soap opera I have a couple of questions to ask before I think about writing any letters to the CRB or BoD.

Was the Process something the CRB tasked the ITAC with?
If so, did the CRB work with the ITAC to develop the Process guidelines?

If both answers are yes, then the ITAC needs to work with the CRB to see that objective to its end.

If both are no, then what did you expect and what was achieved by resigning?