It is
What is the issue involved in this scenario? Why is this serious?
The issue is that a person is appearing to be talking when it's not really them. This is serious because a person can get into a lot of trouble when it wasn't even them and someone else should get the blame. In addition the person who really did it is sort of in a “disguise” because they were appearing as another person.
What would be a responsible way to handle this situation?
I think that people should be honest in situations like this, and the person who did it should admit that it was him/her. I think that in the long run this would make a much less trouble for more people than only themselves.
How could a situation like this be resolved? How would one of the three main characters from The Revealers deal with this situation? One of characters from The Revealers would defiantly post a story to the all of the middle school about the issue. I think they would do that because that's what they did to deal with most of their problems they had. A nice way to resolve a situation like this would be to simply say the word "sorry" to the person getting made fun of and the person they used to send the information out.