I still think that Hamrah was right in putting the letter on PPRuNe to inform people of the situation in hand.
As usual there will be a few people with differing opinions as to the correct way of going about it. But if Hamrah did keep it out of the public eye and just deal direct with 4 Forces then maybe the situation might have been resolved between them. However, Hamrah posted this because he wanted to let people know that 4 Forces were using a video without permission and highlighting bad CRM.
This therefore shows Hamrah in a bad light, and I doubt very much that 4 Forces would have sent a letter out to all those who have attended their MCC course and made them aware that they should have not slated him in thier course. Therefore I 100% agree with Hamrah in the way he went about this. Until 4 Forces apologise publicly the matter should not close.
Best of luck Hamrah
Homer