Normally I'd assume this sort of leak would only be the result of orders from above. But there was recently the credible allegation that Trump backed off the ZTE sanctions after China threw a few million dollars at the Trump Organization in a real estate deal[1]. Whether that was a successful case of bribery or not I can see a highly placed employee looking at that and deciding they can't trust their superiors to do the right thing in this matter.

[1]https://www.businessinsider.com/trump-zte-order-after-china-...