Im sure that in an extreme case, the NOTAMS can be relaxed and all 3 sent to MAN.
Maybe hold one on the allocated stand, and the other 2 on the taxiway between R1 and R2.
I remember on the EUFA cup final day, they parked some MD-80's at the end of Runway 2 and on the taxiway I mentioned above, and the operated R2 at reduced legnth.