Not "strongly," like you said, no.
It doesn't do any good to deny the obvious. President Bush's name for him was "Kenny Boy," and the President used Ken's airplane to fly all over the US in his presidential campaign.
President Bush isn't responsible for Enron, or Ken Lay, or what they did. He is responsible for the Justice Department that put Lay in prison.
I personally feel Lay and Skillern are scape-goated, which isn't to say they did no wrong. Their company hurt a lot of people, and they had to swing for it.