Suspect that there are now two more pilots that will fly with a handheld GPS in their flight bags on the offchance that they might get a signal !
Gutsy choice, staying offshore to avoid issues with terrain and obstacles while engaged in a bit of night VFR at low level till they got a clear shot at a set of runway lights. Hoping the local ATC were on their game with the radar (and that it wasn't U/S) so they wouldn't bump in to any other user of the runway lights while not transponding or receiving (no TCAS), and if the story is true about not knowing where they landed, taking a bit of a punt on the runway length by visual assessment of the lights at night. Of course, this being Africa, you could also throw in the possibility of being shot at !
Probably best option available, many TK pilots ex-military, wonder how some of the career button pushers and dedicated SOP slaves would have approached this one ?