The former Forest midfielder was delighted on social media after the game.
Pearce needed a win more than ever in his managerial career. And things did not look good for the Forest boss when Derby took the lead through an Henri Lansbury own goal.
But Nottingham Forest hit back - through who else but Britt Assombalonga, before Ben Osborn scored a late, late winner.
And the 52-year-old celebrated as though he had quite literally saved his job by the skin of the teeth. And who knows... maybe he had.
Former Nottingham Forest midfielder Jermaine Jenas, meanwhile, now a BBC Sport pundit, was delighted for his ex-club on Twitter after the game.
Jenas was encouraged by the comeback against promotion-chasing Derby and feels it highlights a key quality within the Nottingham Forest dressing room.
Massive result that for forest, shows they have strong characters in that dressing room to perform like that when confidence was so low!— Jermaine Jenas (@jjenas8) January 17, 2015