I've read through a lot of this post and skimmed through the rest, it reads like a business meeting at a Southern Baptist Church, sometimes those meetings are a good idea that go bad. The prank seemed to be a good idea up till some allowed it to get personal, that's when someone should have said enough is enough and put an end to it. Letting things like this get out of hand always has unintended results that turn bad. Believe me I've sat through Southern Baptist business meetings and seen some shameful things said, it's just my opinion, but it's one from experience, that everyone should say I'm sorry "and mean it," and move on. I truly hate seeing people act this way, life's to short to hold grudges or stay mad at others over silly stuff. Stuff is all it amounts to, don't let it carry on in your lives. and make up please.
God loves those who believe and those who do not and the same goes for me, you have no choice in this matter. That puts the matter of total free will to rest.