I admit to having no idea how the civvy display system works, but I know that some of them have much lower height minima than we do.
As you say there is not much room for unexpected in there, however it is very smoothly flown and exhibits none of the hallmarks of a pilot on the edge of his envelope. It is controled and precise at all times, and you notice that even at very low level, when he dips his wing towards the ground and it looks momentarily like it might go wrong, in fact he is already climbing and his wingtip maintains a fairly even separation from terra firma. There is another section of the video where he appears to have a worrying rate of descent/nose down attitude, however when he pitches back to the level attitude it becomes apparent that he actually had plenty of flex and then relaxes the rate of pitch up to take it low level. As far as the double engine shut down on one side is concerned, I guess you would need to know the type to say whether that is crazy or not.
The C27 in this vid is allowed to display.....