Dabo won the ACC Atlantic in 2009, his first full season as head coach, and led his team to the ACC Championship game. We lost to GT, who was later busted for cheating. This was before Clemson's administration got behind football in a more significant way, per your timeline.
"When I was young, I was sure of many things; now there are only two things of which I am sure: one is, that I am a miserable sinner; and the other, that Christ is an all-sufficient Saviour. He is well-taught who learns these two lessons." -John Newton