snip If the wind was from the south on Monday night, they would have
taken off to the south. /snip

There is no such runway at LAX. And I doubt they would have been using
Aviation Blvd.

They only take off to the east when the winds are strong out of the
east. 95% of the time, it's straight out to the west, even with
tailwinds up to ~12 knots.