The Reds looked like being consigned to their third relegation from the second tier in seven seasons, only for substitute Patrick Schmidt to stun Forest by netting the winner in the third minute of stoppage time.
It was the prelude to wild scenes of celebration, with Struber racing onto the pitch to embrace Schmidt.
The win lifted Barnsley above Yorkshire neighbours Hull City and they still have a fighting chance of survival, although they face a tall order at a promotion-chasing Brentford side in their final game at Griffin Park on Wednesday.
But if Barnsley win against the Bees and Luton Town fail to beat Blackburn and Charlton lose at Yorkshire rivals Leeds United, the Oakwell outfit will crown a remarkable and miraculous Great Escape.
Adamant that Barnsley can still stay up '100 per cent', the Austrian said: "It was a special moment.
"It was an emotional explosion in my heart with Patrick and my whole team. We worked so hard. We saw a big effort to create chances and score goals and it was a victory that was deserved and we had control and the game in our hand from the first minute to the last.
"The match plan, spirit and togetherness was a role model of a football team. We believed until the last second we can score.
"Now I am happy, but I do not have so much energy in my body and mind."
On the Reds' hope of an astonishing final-day survival, he added: "We know that Brentford is a massive opponent and they have a special plan on the ball and they play like a promotion team.
"But when we look back to Leeds and today, I think we have a big respect for Brentford, but we are ready for a big fight and with a similar performance, I do not think it is easy for Brentford.
"We can stay up, 100 per cent."