-
The odd person who gets to sneak inside the gfa time doesn't really matter in the grand scheme of things, there's no quota for gfa places so he wouldn't be denying someone else a gfa place. Sure there might be one place fewer for ballot entrants but that's a drop in the ocean.
He was only a few hundred yards from the finish, he probably ran further than that to get over the start line (albeit before his clock started).
I wouldn't overthink it. What if he was carried for 200m or so way back at mile 4? Is that any different to being helped for 200m at the end?
There's other things to consider, e.g. he gets a gfa qualifying time for 2018 after being carried to the finish. Where do you draw the line?