As of right now, if someone has the url for a page, they can get to it even if it's withheld, and anyone can post on the withhold page. I feel as if there are two things that need to be changed with this.
Firstly, if it's at all possible, the "add post" button should be removed from the withhold page. There's no point in having it as there's no notification sent to the game manager (or higher) that withheld the submission, sometimes causing a multiple month delay in getting the submission unwithheld.
Second, I feel the withhold page should not be accessible to anyone but the submission owner. I've noticed a few situations where third parties will chime in unnecessarily and exacerbate the situation, making it worse than it needed to be.
To anyone that reads this, getting a submission withheld is not a personal attack. We gain absolutely nothing by withholding your content. Content is withheld because it breaks the rules. All we're asking is for you to adjust the submission to abide by them.