Mir himself now told mma weekly its off. He said itd take 4-6 weeks for the knee to heal. Which would be mid april at the 6 week mark. Which would still leave about 5 weeks of training.
But he said in the iinterview that he wants them to push it back a couple ppvs. Or if they just swapped main events from 99 and 98 I don't know how well that would work out but its a solution.