Unfortunately I get the impression that while Lufthansa may not have come with the strategy of moving it's long haul capable A330's out of Ringway, it seems to have done nothing to alter or reverse BMI ,s decision.
At the time of the decision was been taken I think Lufthansa could have told BMI to keep the aircraft at Ringway if it had wanted too, since it knew already that it was going to acquire control of BMI sometime in the first quarter of 2009.