I think the point some are trying to make is that even if someone ISN't well liked, or because they may treat others poorly in posts (this IS just the internet)- that doesn't mean that other people have the right to act the same way. Two wrongs don't make a right.
Casa may have done many things wrong - however, that PM was out of line and personally, mod or not, the person that wrote those things should be given a warning. I don't care who casa is, what casa may have done in the past - that doesn't give anyone the right to treat that person poorly. You're doing the same thing that you accused that person of. Can't have it both ways - if mods are just posters too and not representatives of the forum, then they should be punished the same as any other poster when they do inappropriate things.
JMHO.