Position, position, position
He took vows to follow rules and didn't. He could have left the order and preached his message. He boarded a bus and tried to drive it.
All in all, it didn't end as badly for him as it could have
Right or wrong, Benedetto is part of the church and is using the church as his personal shield. He knows very well his church does not and would not sanction his impromptu sermons. He was trying to game the system to push his own personal agenda. The problem here is there is no Church of Benedetto. Then or now, you can't co-opt a church for your own goals.