The reserve team hotshot who came off the bench for his debut against Manchester United entered the fray at half-time in place of injured Robbie Keane for his longest stint so far in the Premiership.
Bolton had enjoyed the best of the first half as they quickly transferred play from defence to attack but 'Barney' helped stem that flow with his high-tempo pressing game.
The 21-year-old simply wouldn't give the likes of Faye and Haim time on the ball and suddenly passes weren't hitting targets as clearances were hurried or charged down.
We enjoyed our best spell of possession in the opening 20 minutes of the second half and Aaron Lennon's goal in that time proved enough as we ran out 1-0 winners.
"I think Lee helped kick-start us playing well because he gave everything," said Martin. "He had never played for us for more than 15 minutes but all credit to him.
"He showed me that my faith in him was always justified and that second half was all about our ability to respond and bounce back."
Martin Jol credited Lee Barnard with helping turn around our fortunes in Sunday's vital win against Bolton.