this is what i see...
using the picture in this post (
http://www.pprune.org/rumours-news/3...ml#post4353744) as a reference, it looks like blackboard is correct about those tracks (marked A) being for the MLG doors. the lines are not as straight forward as the tracks known to be from the MLG and i would suggest these lines were caused by something which could move side to side (the doors?). the fact that they do not appear or disappear at the same point as the MLG itself could be due to differing terrain height and shock absorption from the suspension, not necessarily a nose gear collapse.
the high aspect photo provided by forget proves something i was suspecting a while back, none of the marks could come from the nose gear due to the width. a nose gear track will be approximately half the width of a main gear track.