It should never have come to that, and Shaun really should have done something before there was any talk of legal action, but given the circumstances of the banning, I really can't say I blame him.
You "can't say you blame him" for ignoring numerous emails and PMs, until it finally escalated to the mention of the word lawsuit? You don't think it might have occurred to him "Hey, maybe I should do something about this?" at some point along the way instead of sticking his head in the sand?
And you can't blame him for actually banning people simply for mentioning the publisher or the name of the book?
I said I can't blame him for banning talk about the book
after legal action was threatened. Didn't you read the bit where I said he should have done something long before action was threatened?
And if once someone threatens you with legal action for libel/slander for comments someone made about the book, you can either ban it, and ensure that there's no more libellous comments made period, or you can carry on and hope that no-one else carries on the slander, in which case you're running the risk of more comments being made, and adding more fuel to the legal fire. It's ridiculously extreme, but when it comes to threats like that you have to protect yourself.