OK, seriously, how is BFL a "lethal danger" to Bitcoin? Assoles, sure, but a "lethal danger", no way. The output of Avalon (particularly the chip buys) and ASICMiner is going to quickly outstrip BFL's output, so even if they stopped shipping their units and attempted to 51% attack, that wouldn't go anywhere.
The voracious greed of those criminals is beyond any control. They'll mine with their customers' ASICs until difficulty is so high that 99% of their customers will never see a positive ROI on their Bitcoin investment. This will inevitably drive mining towards even bigger centralization. Ever increasing mining centralization is very bad. If you have centralized mining you have centralized Bitcoin. Nobody will care for centralized Bitcoin. Price will drop to zero. Simple as that.
Just out of interest, got anything to say on the allegations of Avalon using customer gear to mine? I remember seeing that hashing power on Eligius, it was there for weeks...