Maybe it's someone wearing the compliance suit noticing (due to Iranian protesters) that, "Wait a minute, these are Iranians, and we're not allowed to do business with them!" (is that the text of the sanctions law, or maybe it's a compliance suit-wearer's overly cautious interpretation of it?). The suit-wearer might prefer to be compliant with the US law rather than help the revolutionaries...

Meta will do evil things for free.

I would guess that the Iranian government ordered them to do this.