The missile will normally be guided to lead (rather than lag it as might happen in a pure pursuit) the target, and it was likely in the front quarter so it might be expected that the nose took the brunt of a proximity detonation. It's not easy to tell but the cockpit window skin looks sooted and very badly damaged, a bit like the 'shatter zone' mentioned in the PA103 report.
As for it falling largely intact apart from the empennage, I'm not so sure. There were some very large pieces away from the main site - a row of seats and associated cabin items landed in someone's allotment.
Whatever damage to the aircraft may be academic as if the above scenario did occur there is a good possibility the crew were incapacitated immediately.
Edit - Have those pieces from the previous page's photos been moved from where they fell? They have been burnt at the extremities, and the window frame has a pattern that I thought might be mud but it actually looks like a gas path.
Last edited by JamesT73J; 22nd Jul 2014 at 00:46.
Reason: Further questions