Here's a fairly sparse plot from FR24 of the UAL GA:
It could do with a few more data points, but it appears to show that:
a) the United initiated the sidestep at approximately 2.5 DME from the 09L threshold
b) the height AGL over the 09R piano keys was approximately 75' (not necessarily the lowest height achieved in the GA)
The EZY plot on FR24 is even more inconclusive, but is consistent with having entered the runway at D5.
Usual FR24 caveats apply, in spades.