Fact - Something didn't go as planned.
Fact - The reason isn't known.
But if the pilot later flew his display in the other aircraft and it was approved, the root cause is unlikely to have been pilot proficiency, I would venture to suggest.
Remember the MiG 29 prang at Paris? Initial speculation was that the pilot had porked it; however, it was later seen to have ingested a bird and lost a lot of thrust as a result. That very clever Russian seat saved him!
Congratulations to the Typhoon mate for getting back on the horse so quickly afterwards - and proving himself so capable!