Guess they couldn't figure how to to disable something to stop the glitch. Disabling cocoon would have been going too far. Cancelling trials is the right thing to do given that it would have been nothing but heavy spam.
I like how Bungie looks inward to their code instead of threatening to ban people.
If you just fuck around with the bug a little bit people shouldn't be punished. But like that guy that was posted earlier who is playing doubles and murdering people every match and using equipment with the sole purpose of abusing the glitch and ruining the fun other people could have deserve to be banned imo.