Oh the nostalgia of seeing this thread resurrected

(I did an ex-KRT DONE4 in 2013, having purchased the ticket in Oct 2012 just before the fares went up)
I did not know of the new ruling. However the passport which has the Sudan stamps in it has since expired and been renewed. And for a totally unrelated reason I got my latest esta attached to another passport (I have triple nationality). Nowadays when allying for an esta you have to list all other passports you have, which I did.
I entered the US without trouble in January this year.