Nope, since the mods were 'increased' there has been a little too much mod activity. It's probably just settling down into the job, and the old mods just flexing muscles etc, but banning. thread closing etc is going on too much. Heck, the other day I had an email about a thread that was long dead, because one of the mods had dragged it up, just to ban it! Madness.
So no, he shouldn't be banned. The thread wasn't funny. But not banworthy. Even if just for a day.
I was going to write a lengthly post about how I've moderated for three years so I know the power of strict moderation but I'll just leave it at this: the guy posted a shitty poll with no question. We don't want such stuff posted here. Hence, punishment.