Just out of interest sake (and a possible defence of the display pilots actions) is there any chance that the extent of the nosewheel digging in may not have been readily apparent and that it may have been perceived as a heavy oleo compression and it wasn't till after the departure, undercarriage retraction and return to the paddock that the visual evidence may have been a little more alarming and warranted further concern.
It would have made sense then perhaps to undergo inspection but as everything had functioned normally after there first departure it was decided to press get home and then get it sorted.
Just a thought....
