Because of this price volatility, I'm going to change the bounty to be a constant value in BTC to be paid out in MRO. You are welcome to withdraw yourself from consideration if this is a problem, but I think this is agreeable (it's just economics and nothing has changed from before in terms of BTC/fiat value).
So I guess your integrity isn't worth 300 MRO either, eh? Because this really isn't acceptable.
Folks, let this be a warning: This is what happens when a "contest" is run without the prize being held in trust or in escrow. Submissions are solicited and browsed, changes are asked for, then suddenly, the people running the contest no longer feel an "incentive" to pay out.
You Monero people should think long and hard about what kind of message you're sending out by doing this. If your sense of greed is so petty that you can't even pay out a reward that has already been promised and presumably put aside, then I don't know how you expect anyone to trust you to develop and foster the growth of a cryptocurrency with any wisdom.