Think about the implications if the court that prosecuted this case threw it out due to unconstitutional intelligence gathering. He doesn't deserve to get off, but wouldn't a decision like that have implications across the US?

I claim no knowledge of legalese other than having watched Law and Order, so if this is ridiculous please edify me.

Think this would fall under "fruit of the poisonous tree". If the source of the evidence is tainted, anything that came from that source is also tainted. This doctrine is well enough established that undermining it would have far greater implications than letting a single lawbreaker go free.

What about it sounds like parallel construction?

The part where they connected his new StackExchange username to information they pulled from the machine image of Silk Road they'd already made in July.

Finding the machine and busting the VPN that connected to it were the real ways they tracked him down. Oh, and of course the Customs and Border patrol seizure of the forged documents he ordered, during a "routine inspection".

DPR is too smart to leave behind real evidence. Therefore, if they claim to have found evidence, it must be fake.

Agreed. The official story sounds made up.