After such a rebellion, they had no choice but to elevate him. If not, we would have landed into a constitutional crisis. And who knows, they may have used this issue to blackmail him so far, and he refused to buckle and hence this expose !!Why was he then elevatated to CJI in the first place ! Recollect the story -Justice AN Rays elevation to CJI by Indra Ganthi
In this case the collegium failed to sufficiently vet the background and investigate the authenticity of these allegations. Unless of course, it was "cooked up recently" in the last few weeks aka ala rafale !!