BNP's denial

A few days earlier BNP leader Moudud Ahmed, in a talk show, compared Bangabandhu with Ziaur Rahman giving Bangabandhu's position before Zia. And the acting Secretary General of the BNP expressed his party position saying that Joj Miah was the mastermind behind 21st August grenade attack. The final probe report, based on confessional statements, has revealed the truth. But the BNP could not even maintain silence.
My question is, will these denials convince the people that BNP and its top leaders were not involved in that grenade attack? I don't think denial will work any more. I think BNP should maintain silence rather than shouting in vain and fight legal battles instead of inciting violence.