Well, I'll be blunt. I was trying to use this is a subtle hint to anyone using this strategy that there is a much more viable option. A public service announcement if you will. Coop games are quick, easy and will provide around the same rewards as surrendering at 15mins with the bonus bit of having a win under your belt.
Also, please submit tickets regarding these players in the future. This will give us much more information to track these issues and assign appropriate consequences.