Paul's now deleted comments on B.Ph.D may have been too close to trolling. Or not. It doesn't matter now, because they have already been said. Further argument will not unsay them; it will only say them again, more forcefully, with more real world repercussions. Let it be.
Dr.B. may have made the wrong decision by deleting the comments and banning Paul. Or not. It doesn't matter now, because the damage has already been done. Further argument will not undo it; it will only do it again. Let it be.
The email Paul sent to Wally may have been threatening. Or not. It doesn't matter now because the damage has already been done. Further argument will not unsend the email, it will only send worse emails. Let it be.
Wally may have been wrong to contact Paul's advisors. Or not. It doesn't matter now, because Paul's advisors are now aware of what is going on. Further argument will not plunge them back into ignorance, it only gives them more evidence of unprofessional conduct. Let it be.
Paul may have been wrong to threaten lawsuits against Dr. B and Wally. Or not. It doesn't matter now, because things have already escalated this far. Actually following through on the lawsuits will not help anyone. They will only increase the acrimony. Let it be.
At this time there was a bodhisattva monk named Never Disparaging. Now Gainer of Great Authority, for what reason was he named Never Disparaging? This monk, whatever persons he happened to meet, whether monks, nuns, laymen or laywomen, would bow in obeisance to all of them and speak words of praise, saying, "I have profound reverence for you. I would never dare treat you with disparagement or arrogance. Why? Because you are all practicing the bodhisattva way and are certain to attain Buddhahood.--Lotus Sutra, Chapter 20.