I've never had a problem with it. Explain?
If you do make a ten second looping "Door" event to spam bricks, you'll notice that the brick becomes partially visible, and wandable, for a very short time. It'll get annoying, but it is possible to wand these. If you're having a problem with people doing it, limit the amount of events they can make with the server prefs. (Read the Help File)
What actually stops people doing the same with Badspot's events? When I asked, Wedge said it would be "very annoying for someone to make all the bricks and give them different names" but it's still easily possible to make an AutoSpammer code macro.