the shot at redemption= ?

Context:

Zimbardo brushes off the suggestion that
it all seems a bit scattershot. “This is my
new mission in life,” he says. He chipped in
$30,000 of his own money to start the proj-
ect and has since raised nearly $250,000 more
from other donors. He’s considering auction-
ing off some of his art and wine collections.
“I grew up in abject poverty in the South
Bronx,” Zimbardo says. Now that he has nice
things, he says he’s willing to give them up if
that’s what it takes. Zimbardo seems to have
thrown himself wholeheartedly into the chal-
lenges of his grand new experiment—and the
shot at redemption. “It’s rescued my career
from being Dr. Evil to being Dr. Good,” he
says. –GREG MILLER