The Center Wing Tank was recovered from the bottom of the Atlantic and does not show any signs of being "exploded" such as walls bowed outward from the force of an explosion. Instead, where the walls are damaged, they are bowed INWARD, from a force acting from the outside.
If I recall correctly, although I don't have a photo of it, the forward spar which formed the forward bulkhead of the tank, was also bowed inwards, not outward. The G forces required for the 3800 feet climb of the CIA in 18 seconds is literally beyond the stress limits of the 747 with an intact Center Wing Tank. With a compromised Center Wing Tank, it's doubtful the wings would have stayed attached, much less carried the plane aloft that distance. Absent a good attack angle to achieve lift, and given no power, that plane did not climb.
The nose of the plane broke off about 20 feet forward of the Center Wing Tank. Not where any of the forces from a Center Wing Tank explosion would be anywhere
This timeline was based on my examination of the radar returns, both active and passive, debris fields, wreckage recovery, and the blackbox data and eye-witness reports that I deemed credible. Other Freepers critiques and inputs were considered and when suitable, resulted in changes to the timeline. This was constructed back in September 2002 in response to a Freeper named Asmodeus whose rude and reprehensible behavior toward other Freepers he disagreed with on this topic got him banned.
21:31:04 Possible ground-to-air missile launch. Rate of climb accelerates to Mach 2.1.
20:31:55 - ~43 splashdown.