I'm furious about this, but I want to repeat two points that have been made by others.
First, although I agree this is collusion in any reasonable sense of the term, FFG's Organized Play has effectively defined collusion as "I bribe my opponent in front of the tournament marshal." The TO is not really in a position to DQ players for taking advantage of a rule that was explicitly added for this Regionals season.
Second, it really is silly to blame the players for following the tournament structure FFG laid out. That is, it's too much to expect players at a competitive event to deliberately put themselves and their opponents at a disadvantage in order to prove a point--especially a point like "I'm more ethical than you are."
The problem is that FFG's Organized Play put an embarrassingly bad rule into place. The people playing to win according to the clearly stated and agreed-upon rules are not in any way at fault for this outcome, and neither are the judges and tournament staff who allowed the completely predictable outcome of the terrible new rule to develop. If you want to be mad at someone--and you should be!--take it up with Organized Play.