Pretty much seemed like classic LTE to me, "highish" power setting,
low forward airspeed and pilot may have been concentrating on the
target of the camera shoot. It would be interesting to know the angle
of the wind.

They were fortunate to be so low, a similar incident in Melbourne
Australia several years ago (Bell 206 filming) happened from just
under 1000' and the injuries were severe - there's video footage of
that somewhere, filmed from ON BOARD the helicopter: very scary stuff!

And, of course, some prime examples in my book "Fatal Traps For
Helicopter Pilots" (see http://www.fataltraps.com ) - I'd be silly not
to mention that of course!

Compliments of the Festive Season everyone,

Greg Whyte