Oh, it's a trap all right. For Reid and O (since his people started this line of attack with the whole "felon" comment).
At this point, Romney's base knows without doubt that Reid is lying. The independent voter, or a majority of them at least, don't care how much Romney pays in taxes, they just want someone to get the economy started again, without piling a shit-ton of debt on their backs to do it.
Keep hammering away, O. Don't be surprised if Romney shows up to the first debate with a summarized return showing he paid more in taxes each year than you made in your lifetime. Then turns that fact against your "out-of-touch" talking point by talking directly to the voters saying "Like you, I believe that government has become too large. I should know, I pay a lot for it."