Jackharr
I was just about to ask the same question. Engines below centre of gravity and centre of drag, so by appling thrust forces the nose up (as has been stated before). Low speed, so control surfaces less effective in offsetting this pitching moment. Increased AoT giving increased drag, so speed can decrease despite the additional thrust thus accentuating the stall. Would it have been possible to have cashed in almost all of the 450 ft height for speed whilst gently increasing thrust? (The captain was an F4 pilot - thrust on the centre line - different scenario!).