Ok now I have understood the u r the OP but why don't answer to email or twitter ?
..then why u have fix the double spending problem on 24h and not on weekly one ?
I'm sure that I can find "another" way to cause the payout order to be adjusted, the software leaks tx fees and is obviously poorly written. Depending on blockchain.info is the big problem.
I'd likely start with a DNS poising attack to control access along the lines of what happened this week, but done deliberately.