Quote Originally Posted by VelKallor View Post
..thats on the cheater. Not on OP.
The OP could've given the cheater an ultimatum "Stop using it or I kick you" then given them one last chance, or they could silently search for a replacement and kick the cheater once a new member was found. There's a lot of other options that wouldn't inconvenience the other 6 people as much as what they did.

Let's not pretend the inconvenience is not entirely on OP's leadership. The action of kicking immediately with no backup plan is one that OP is entirely responsible for.