Never heard that Furtick was a Clemson Fan.
All the fandom aside, New Spring and Elevation are not related but they follow the same business model and are thick as thieves. There is a ton of information but here are two quick ones.
http://www.charlotteobserver.com/living/religion/article13896527.html
or
http://www.charlotteobserver.com/living/religion/article140908263.html
Also check out Dr. Jame's Duncan's website
www.pajamapages.com Anderson College Professor who had and "interesting" interaction with NewSpring.
From an article on the board of overseers which is basically a group of other mega church pastors that set each others salaries.
Pastor Dino Rizzo (Healing Place Church – Baton Rough, LA), Dr. Jack Graham (Prestonwood Baptist Church – Plano, TX), Pastor Perry Noble (Newspring Church – Anderson, SC), Pastor Kevin Gerald (Champions Centre – Seattle, WA), Pastor Stovall Weems (Celebration Church – Jacksonville, FL), [and] Pastor Steven also serves on the Board, but does not vote on his salary."
If some of the theories in this thread are correct then there are a lot of Gamecock fans that contribute to Clemson.
Do what you want as far as your religious beliefs. But Elevation and NewSpring reek of old PTL shenanigans and prosperity gospel.