The 0.325BTC amount is for the entire month, and does not appear to pay all the forum's expenses. As I noted, the forum spent 56% of that on mod payments, and Loyce noted the forum accrued a liability to pay the treasurers 77% that. That means the forum spent 133% of ad revenue on expenses before hosting costs, which I imagine to be four figures /USD per month.
With the much higher Bitcoin exchange rate this year, I believe it would be making an assumption to think the BTC payment to treasurers would remain the same going forward. I find it a bit unlikely that this would be the case. I would even go as far as to propose up to an 80% reduction in the BTC amount paid to treasurers and think that could be done by theymos without anyone involved having an issue.