I have played several games against two players who I believe are entering games together with the understanding that they will do what they can to get games down to the final two before actually engaging in battles with each other.

I understand how various truces of this kind may materialize from game to game, however, after looking at 6 or so different games it seems that they have a mutual understanding to protect / help each other. 

Is this ethical?  I'm inclined to say no.  Personally, I do not want to play in games against both opponents at the same time.

The two players are Tommy and HorseKock

Any advice?  Is there a recourse, for this type of suspected behavior?

It's considered cheating to go into a game with an alliance formed beforehand. Contact the Admin using the link at the bottom of the game page.