Pity it didn't happen, that black flag. A grid penalty isn't as harsh as a black flag (and seen as a hard penalty) given the fact that a unlucky fellow who needs an engine or gearbox ends up with a similar penalty if only for 5 places.
Fair point, but given the fact it was only a couple of laps from the end of the race, it just wasn't possible in all honesty. However, and this is just me being theoretical, had they black flagged him for it, I wonder if they'd have then been able to give him other penalties on top of the black flag (ie a grid penalty/race ban). Not suggesting he should then have been given extra penalties after the race, so don't take it that way, just wondering if had he been black flagged, would they be able to give him extra penalties.