ADS-B data logged by Flightaware24 suggest the B767 had descended to 250 feet before the go around was initiated.
ADS-B height data logged by the flight tracking websites is basically a Flight Level (whether above or below the TA), in other words it's not corrected for QNH.
So if the aircraft was actually at the height indicated by FR24, it's pure coincidence - indeed the video strongly suggests it was lower.