you can get the rotors off by just pulling really hard but you will ruin the shoes and damage the handbrake springs. (aka you;ll need new parts)

other than that, take out your console and press in the ends of the cables as much as you can to see if that frees them.

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1992 850i 6 speed
1991 M3 S54B32 swap
2007 328iT/6 RWD sport wagon
1987 325E 330iZHP engine swap
2004 Vespa 200GT
1976 W115 240D getting a much bigger engine. 5.5L
1997 R129 SL600 5AT