My e brake was stuck when I pulled on it the line broke and now I can

Michelle if the ebrake is locked in the on position the only recourse is to remove the drums and repair the siezed cable . When im faced with this problem I find its best to cut of the cable where it goes into the drum and work the cable into the drum to free up the brake enough to get the old drum off . I have had a sever case were i ended up cutting the drum in half to get it apart . But usually a lot f work with a heavy hammer can do the trick. Expect to have to replace everything in the drum with any luck it will only be one side thats locked on . Hope this helps