Mod Cooperative

This might be a weird question, but what do other people do when in character threads are becoming too filled with drama (sometimes bordering on crack) and veering away from the premise of the game? (Keeping in mind that the game in question is 1.) Glee-based, so a certain level of OTT stuff is expected and 2.) an AU where the characters have super powers) But there are a few story lines going on currently that just don't fit the overall tone of the game I want to present. I don't want to be SUPER CONTROLLY MOD, but I want to encourage more overall character development and less focus on angst smutty shipping lines.

So, are there any suggestions? (I've got a few game-wide plots planned, and we do random threads every now and then to get people interacting with character they normally might not.)