Only thought I have is that both players must sign in2 2k open or Wt then 1 leaves and creates the match. If both players are happy and believe no pre patched players are about then start the match. Due diligince is key.
This way both players have both agreed b4 the game that no funny stuff has happened and thus have no complaint after the match.
If a player goes offline then back online they must renter the WT or 2k open.