Correctable error - Cavs vs. Wizards game 6

[Dribble]

Just saw a correctable error in the Cavs vs. Wizards game. Haywood was flagrantly fouled by Drew Gooden, but Carron Butler shot one FT as if it was a technical foul. I thought the announcers might have just called the wrong, but I could hear the PA announcer in the background say that it was a flagrant foul.

Several minutes later the officials corrected the error, erased the FT by Butler and had Haywood shoot his 2 FTs.

I didn't know that the NBA allowed a correctable error to be fixed so far after the incident. The way that it played out, the situation wouldn't have been correctable in NFHS or NCAA.