I know that post is sarcastic but this is actually a pet peeve of mine... Personally, I find it very unappealing to use in-game tactics to counter problems with mechanics. This is a bit of a soapbox for me, but 4.0's legions of options/items are quite problematic; there are several specific items/combinations that are just plain better than everything else. And if someone has made a heavy investment to exploit one of these, I dislike simply squashing their investment with something tailor-made to counter it. It seems needlessly confrontational in my opinion; you're using your power as a DM to circumvent their choices and tell them how you think they should play the game. I'd rather address the problem up front: either ask the player to respec, house rule it beforehand, or these days... wait 2 years for WotC to actually proof-read their material and then correct it.