Indeed - all that thrust vectoring vertical out the back and no lift-fan vector - it'd just pitch forward and somersault.
So they might hear a fraction of a second sound of the klaxon before being catapulted out...
This also:
https://www.fujitsu.com/downloads/MI...10-01-2330.pdf
Sounds like it's the ICAWS which makes the punch out decision when auto-eject is armed.