Oh puhleeeze!
Bare (sic) in mind that aircraft have to follow the green taxi lines which are also illuminated by green lights at night.
Obviously never been to JFK! They don't have "green" taxiway lines and they don't have green centreline lights on most of them. Just blue edge lights. The faded yellow centrelines are extremely difficult to see at night and nigh on impossible in the wet.
...or the parked aircraft was parked too far back (not likely)
Why is it not likely? You should know if you're an airside worker at LGW that if a stand is not fully ready, the a/c will hold short until it is. In the video of this incident, it is quite obvious that the CRJ is holding short of the stand for whatever reason, as is his prerogative.
Those wishing to offer "expert opinion" without the experience or qualification to do so should avail themselves of a parallel thread in Jet Blast where they can shmooze with fellow raconteurs and pretend they are all pals whilst moaning about the "sky-gods" on this thread who, where it is obvious, are offering opinion based on fact and experience. Here, I'll help you. Just follow this link:
http://www.pprune.org/jet-blast/4485...ishap-jfk.html