So, looks like Harris leads by 832 votes in Bladen (and district-wide by 905). If there's a reasonable belief some shenanigans occurred here - to the extent that it's equivalent to roughly 1 in 5 GOP ballots cast in the county - then this would be the biggest instance of voter fraud in a long time.
The Charlotte Observer story says that Harris leads by 1557 in Bladen.
I must have not done the math properly: I handcounted using this link from the State Board of Elections (though it shows countywide the same lead you mentioned).
Aaah, OK: early and absentee are in their own countywide category, and thus don't show on the precinct map totals. So Harris led by 832 votes from Election Day voting out of 4276 votes cast, and an additional 729-vote lead from early, absentee and provisional voting out of 5122 votes cast.