Missiles were on the waist stations thats clear. It happens, sometimes, arodynamics "momojhombo" phenomenom, force that the stores separeted from the fuselage behaves in unpredictive ways. Now thats real world, in the simulation, is also posible and depends on the level of fidelity of the aerodynamics bleed air simulation was done. In my opinion, ED have been achive a plausible model that permits this, very real, very rare, anomalos detached of the stores from the fuselage. See this history: http://www.ejectionsite.com/F-14%20SHOOTDOWN.pdf