The 25-year-old was carted off the field during the fourth quarter of Seattle's 43-8 win at New Jersey's MetLife Stadium.
"It really numbs the pain a lot," Sherman told ESPN.
"It was really hurting, and I was sad I let my teammates down and I wasn't able to finish the game.
"But I knew they would step up for me and do that. And this feeling is just unbelievable, it's a dream come true."
The win was Seattle's first ever triumph at a Super Bowl. They were beaten by the Pittsburgh Steelers in 2006 in their only previous appearance.