May be its the MAN aircraft that are going tech, which is why the delays are at MAN.
Two Subs are to cover a A300 which is on a planned "C" check, they are using a 767-200 of TUI and the overspill on the second aircraft.
As pointed out MON were short due an a/c stuck in ATH overnight on its way to ZTH, plus an EFL operating today from yesterdays flying program, due to the quake.
As pointed out the A300 in CFU will not of helped.