Ouch, that is unfortunate. It's especially worse when you've only just taken it out of your SDB to sell on the TP/Auction house, etc. That's always my worst nightmare when I'm moving something from my SDB, though it hasn't happened to me yet.
I agree with what others have said on removing these sorts of REs that can take away tens or hundreds of millions of NP if you're unlucky like this; they did remove REs such as Boochi for a similar reason iirc, as one unlucky RE while your pet was active could instantly remove a multimillion dollar paint job.
(Correct me if I'm wrong, but couldn't Boochi and similar REs affect exclusive and nigh-unobtainable colours such as Robot or Ice?)