Help against very freak formation

Hello guys, tonight i'm facing an opponent in the Cup, that uses a pretty strange formation, that should be marked as a 2-2-2-2-2 and it's lined up in this way:

GK
DC DC
DMR DML
MC MC
AMR AML
ST ST

According to the rules explained in the Top Eleven Wiki and in this forum too it should be an illegal formation, due to the lack of the "at list three defenders" condition, but i saw the statistics of his previous matches and he never had 20% possession, actually gaining at list 47% possession and over.
I have a quite various team, covering almost every role, missing only the DMR and often play with 4-4-2 classic (sometimes switched to 4-2-2-2 hexagon), 3-1-4-2 or 3-4-1-2.
Overall team level is 49,9 (me) against 48,4 (him).
Some suggestion ??