Hi!
I think not correct when somebody do that what he wrote and he's judgement:deleted from battlenet
Example he has played about 2 k games and he will not play any more on he's primary account becouse he has done it?Only this was he's fault.
Example 2:not fair when ally becomes ally killer(betrayer).Its happens with "teampickers" many times.
1.Host game host decision who will be ally or enemy
2.They have been chosen by a few or lot played games
3.They are friend or ally who has switched

I think and its logic these are the reasons why are they change teams.Not fair when these host have killed