Say all you do is trying to mix up your coins or mess around with getting untraceable coins, how much trouble can you potentially get into with L.E for just depositing into these markets and withdrawing Bitcoin with the sole intention of tumbling?
Which also makes me wonder, for acounts who had not made any purchases on Silkroad but deposited when it was taken down and Bitcoin had been siezed, would it be legally possible to ask for it back?
I'm going to completely ignore your question, and ask you why the hell you would use a DNM to tumble your coins?
Also, no you cannot ask for your coin back.