If you were in a relationship and discovered the other person had been lying throughout your time together the chances of the separation not being acrimonious are, frankly, zero. And if you then discover that this same person is continuing to lie and is hurting other people with those lies, then speaking out is the only decent thing to do.

If you want to read what Maharaji 'made clear' about divine incarnations then read these pages:-

http://www.ex-premie.org/papers/claims.htm
http://gallery.forum8.org/god_claims.htm

but of course you know all this, but just argue against it in public because you believe your Lord doesn't want his previous claims to be made public.