Whilst I can appreciate the need for sanctions as well as the need to not publicly name and shame, I do think it would be a good idea to give details of just what driving over-exuberance gave cause to give the individual bans in place. I've not seen the driver briefing sheet I admit, and this may well be covered in that detail, but certainly to give these details would allow people to see exactly how little you have to go past the line before action is taken.
For example, does a doughnut in a car park give the month ban but going broadside out of a corner give the week? I have no idea of the details, nor do I wish to seem as if I'm criticising the team's decision on this, I'm only looking on a viewpoint of clarity.