Logically I Will Say Yes,

If The Federal Government Filed fresh charges and one among the charges is that Nnamdi Kanu is a member of IPOB.

I would believe that Nnamdi Kanu Legal team would probably advise he pleads not guilty which he did and indirectly denied IPOB.

Be that as it may seem, I don't think denying IPOB means deny Biafra

Nigeria is more concerned with quenching the Biafra Agitation than they are actually concerned about MNK.