the offender restricted his teammate to play a round, so lets say that the punishment for him should be x2. A round can go like 15-20 minutes, so lets say his ban should be 40 and rounding 1 hour.
1 hour ban isn't that bad or anything, and killing a teamate is not the end of the world.
BUT, if the offender, as other people have stated, have done it more than once, the ban should be longer.
also, have he ever been banned for doing this stuff?