In 2003 Barber was 4th overall amongst running backs with six fumbles lost, and near the bottom of the league in fumbles total with nine. It was his fourth straight season with at least eight, and the third of four seasons with nine. There were whispers that the Giants were frustrated with his propensity to put the ball on the ground. Scouts talked about him as a third-down back and wrote pieces that attributed his fumble-itis to the fact that he just wasn't built to be an every-down back.
It was believed that Barber, in spite of his great yardage, was likely to end up on some other team's roster as a change of pace back.
Not the most lucrative of positions - certainly not compared to starter's money.
Coughlin came in and fixed him. The coach changed the way Barber carried the ball. In the three subsequent seasons Barber fumbled the ball a total of eight times. Coughlin made Barber one of the premier backs in the league.
For that, he gets an ungrateful pissant retiree who is engaging in revisionist history to make himself feel better about retiring early.
If he can't separate facts from the fictions in his mind, I'd really prefer it if Barber just went quietly away...although, at this point I would settle for him just going away.