Maybe that backward walking is the only trick HKS can perform and so he is showing off.
You could be right! I’ve seen old movie reels of backwards-walking races, ya know?
I prefer now to think that someone - maybe one of the imaginary “ransackers” - was inside Horizons forcing HKS at gunpoint to “take that baby out to that car now!”
He couldn’t put his hands in the air, with a baby in his arms, you know, so he was backing away slowly, before he was about to make a break for it. Down the steps, one by one ... inch by inch, slowly I turn ...
But lo, from the corner of his eye, he saw the steely glint of a camera lens reflecting the morning Bahamian sun. He knew what he had to do.
It’s what Anna would have wanted.
Continue backing away slowly in an unusual enough manner to attract the cameraman’s attention, then do whatever it is you’re gonna do that’s even more outrageous!