Partner abandoned all duties & communication, falls under: non performance of contract (#39 below). How do we replace the partner (he won't respond)

Involuntary Withdrawal of a Member 39. Events resulting in the involuntary withdrawal of a Member from the Membership will include but not be limited to: death of a Member; Member mental incapacity; Member disability preventing reasonable participation in the Membership; Member refuses responsible participation in the Membership; Member incompetence; breach of fiduciary duties by a Member; criminal conviction of a Member; Expulsion of a Member; Operation of Law against a Member; or any act or omission of a Member that can reasonably be expected to bring the business or societal reputation of the Membership into disrepute.