Welcome to the United State Goverment people! Who else would have the power to manipulate the price like this, and the motive to do so?? All those tax free transactions are eating at then, and they can't take it anymore!!
The tax free transactions are not having any significant impact on our economy and they can still go after you as a person for evasion of taxes if you don't report your bitcoin profits to them.
When you sell any and transfer it as US funds into a US bank you bet they know about it.
DO NOT FILE ,and you have broken no contract. File and don't pay, (even once) and you have a broken contract.