Until the full facts are reported by the AAIB, it is only speculation that the aircraft was 40 degrees nose up and at 90 kts airspeed simultaneously during a go around.
The quote from flight states:
"sources say that incident on 23 September involved a go-around following an uncommanded power reduction that left the aircraft at stalling speed during the approach".
It doesn't say "during the go around"
Flight continues:
"The crew disconnected the autopilot and autothrottle to recover the aircraft successfully to safe flight, but witnesses report that the nose-up attitude during recovery exceeded 40° and the airspeed reduced to approximately 90kt (166km/h) at its lowest point."
This 90 kts may well have been during the initial approach, not during the go around.
"The crew then carried out a safe landing at the airport, the AAIB confirms."
FB