Probably a lie that Reid purposely wants to spread. If Romney does nothing, the lie will gain traction (since if he hides it, it must be true or even worse), which will gain an advantage for the Democrats. If Romney reveals his tax returns, it is bound to be bad (since he hid it), which will once more give an advantage to the Democrats.
Either way, every outcome is good for the Democrats. Clever gambit.
Want DP delivered to your inbox daily? Subscribe here: