I was extremely reluctant to comment on this thread and I haven't even read it all, but I'll give my 2 cents.
The worst case scenario is the scenario where Ajahn Brahm broke a vinaya rule. Although I think this is very unlikely, is it such a terrible thing? It wasn't a parajika. Ajahn Brahm is human so he is bound to break the vinaya. Even the Buddha, when he promised a heaven full of consorts to a disciple if he practiced the path thaught by the him, the Buddha (in my interpretation; I may be wrong) lied. The Buddha, the supreme example to all of us, wasn't exempt of breaking the vinaya. Ajahn Chah also read the palm of the hand of a disciple, breaking a vinaya rule. So this, I think, is such a subtle issue that it should be left to bhikkhus to decide the best course of action, if any at all. We, as lay people who haven't experienced what it is living acording to the vinaya should only express indignation if the situation is severe, like a parajika, or a schism, or a big event like the bhikkhuni ordination, for example. I would even understand comments if there were bad intentions in Ajahn Brahm's heart that were discernible to us. This is clearly not the case. When we're not even sure if it was a breaking of the vinaya, why be judgemental?
As a member already said, Ajahn Brahm deserves better.
He turns his mind away from those phenomena, and having done so, inclines his mind to the property of deathlessness: 'This is peace, this is exquisite — the resolution of all fabrications; the relinquishment of all acquisitions; the ending of craving; dispassion; cessation; Unbinding.'
(Jhana Sutta - Thanissaro Bhikkhu translation)