If it's not big enough to warrant a wipe, why did it get one? A 7 hour rollback is a wipe. Not a full wipe, but a wipe nonetheless. Also, how could you know how many people were aware of something? I'm pretty sure that is impossible to do without thoroughly investigating each person.
Best thing is they took longer to even announce what was going on than the rollback itself. Good thing this is just a time killer for me, can't wait until one of the real MMOs of this year comes out.