Jump back! Chace Crawford has dropped out of the “Footloose” remake, which enlisted him after original star Zac Efron dropped out, followed by the director, Kenny Ortega, who helmed all three “High School Musical” movies. Is this ’80s reboot doomed? Apparently not, as “Hustle & Flow” and “Black Snake Moan” director Craig Brewer has now signed on. This could actually get interesting — what are the odds he moves it from the midwest to Memphis? Can Samuel Jackson play the John Lithgow part?