Rogues can have a fairly high AC. Just close your eyes and use some high-damage weapon you're not proficient with, and you can probably coax an almost sure miss even from the PC's. Make it a halfling with second chance (and/or find other similar abilities) - the miss will be almost certain.
I doubt this is such a brilliant strategy, however, simply because it costs quite a few actions and likely doesn't actually deal that much damage. And yes, obviously using lots of villagers like this is abusively cheesy - and trying to miss the rogue to hit the monster is pretty questionable too. (I don't think it's technically a bag-o-rats situation, but whatever).
Part of the problem is that it (a) requires an attack roll to grab the target, (b) requires either way too many actions or a resource that's not easily available (a bunch of suicidal low-level villagers that are willing to risk their lives on some harebrained plan - better hope nothing goes wrong). The villagers do need to be able to actually hit the square the rogue's in - and I could imagine even a dispassionate DM might not that happen automatically at 40 squares blindfolded, through a crack. Funny cheese, but it's not quite there yet.