Rule 101 of exploiters/hackers.
Never flap your lips until you've subverted the network. THEN you hold the cards. Otherwise, its just bluff.
IMHO, at very worse, that guy found a simple bug that is too easy to detect if attempted, and is using it as bluff leverage to try to gain from it indirectly.
This.
I believe Iranian is trying to drive the market price down a little, to buy more cheap coins. Weather or not he has insider info is another story.