Do you have any substance to your allegation of Microsoft hiding behind their pricing model?

This is very straight forward from their view, before: almost no traffic = almost no costs, now: huge traffic = $$$.

On the other hand, it doesn't seem that Troy did try to talk to them about this and seems to want to eat the costs himself. As it was his mistake. I think that's commendable. I also think with the amount of free advertisement Troy has done for them they'd be open to this and I can imagine we might see a followup post like "MS was so nice they waived my costs".