composite snatching gone wrong

[stagebear]

the other night, some of our girls managed to snatch the composite from our favorite fraternity's house. we sent them a picture of us with it so that they knew it was us and the the omposite was safe. all fun and games - until some of them overreacted.
instead of calling to say it wasn't a joke to them, they planned to get it back. we found out about the plan (time and all) from several sources, so were ready.
as they surrounded the house at midnight, and one rang the doorbell. we didnt answer since some of the started to get riled up. some then proceeded to throw trach around and make a mess of the yard.
after trying to calm them down, they left (planning to come back later). after talking to the president (a really good friend), i decided to take the composites back to their house and talk to them.
i tried to explain that it was in fun and that we only did it to them cause we love them - we would have laughed if they did it to us. well, some of them were so riled up that they weren't listening. the one that got them riled up and i then went and talked privately. i finally got through to him our intentions and why we didnt just answer the door.
we came to the agreement that those of us that actually took the composite (cause it was not a chapter decision)would apologize to their chapter and the guys involved would apologize to us.
so now we're waiting for things to cool down - esp since all of this happened in less than 24 hrs. i know that a lot of the guys thought it was fun that we took the composite cause they were joking when they found out.
so i dont know what else to do. i think they have a better understanding, but i dont want to let this ruin the closeness of our chapters.