You're an (alleged) insider trader who's been working a scam for a couple decades. You suddenly get worried the Feds are on your ass. You paid an accomplice a few hundred thousand from one particular transaction (you withdrew the money from an ATM, natch) and now you're worried it might come back to bite you in the ass. What to do? If you're Garrett Bauer you have a level-headed debate about it with the guy you gave said cash (who hid it at his cousin's house), in a conversation you don't know is being recorded.
Proposal number one: just burn the money.
Proposals number two: wash the money.