[Anti Ban]
Just thought of these:
*Play your parts well, actually pass the gold to the 'trustworthy' person for each roll so it shows up in Blizzard's logs for future referance.
*On the assumption that Blizzard doesn't log /rolls, on the final roll assign someone to pretend that they've won (for benefit of chat logs) and have the gold passed to them before you quit the party.
*If all goes well, then even if the mark complains, the investigation (chat and trade logs) will make it look like the mark is just an incredibly bad loser and may even get a warning themselves.
*Do not discuss the scam in game, make all preparations on an IM program or Vent or something simmilar (Common sense, sorry).
*If you are extra paranoid, have the pretend winner hold on to the cash for a few days before you split it. That way you can assess whether you've got away with it (you should anyway).
Please leave a comment if you are reading this, even if you think it sucks, feedback would be nice.
[edit] More!!
*Also the issue of sharing the gold.. just thought that after the party kick, another few rounds of rolls to share the gold should work (obviously making sure you drop a mention in party chat for the logs)
The scam could be also be pulled off without having to actually scam the mark (don't flame me yet, let me explain)
If you think, you have a group of 4 working together.. thats a good 80% chance of winning anyway and the mark has no chance of finding that out.
Say you have a 1000G stake, you have that 80% chance of a win. Win once and kick from party and invite next one. Pull the actual scam on the times that you lose and then you have an average of 80% 'satisfied customers' (Satisfied to the point that they haven't been scammed).
If Blizzard was to then investigate, those 80% non-scammed peeps should hopefully help to prove that the mark was just a cry baby and a bad loser.