When you memorize a piece, your fingers could fly until/unless you made a mistake and consciously tried to correct what you did wrong--and couldn't even remember what note was next. TYpically you're better off to start all over and hope your fingers make it past the rough patch on their own. Good teachers warn students to keep going if they make a mistake while playing in a recital. Keep that automatic playing automatic. The same is true in sports. (Gazzaniga, Michael S. Who's in Charge? p 78-79. NY: HarperCollins Publishers, 2011)