A team spokesman I contacted said Demoff was alert and that paramedics were taking him to the hospital as a precaution.
Demoff, who is in his 30s, has been with the organization since 2009. He played a role in the Rams' major front-office and coaching hirings. As chief operating officer, he also negotiates player contracts and manages the salary cap.
Update: Demoff is apparently fine. Hilarious tweet from him this afternoon.
"I guess fainting the day after going over .500 isn't exactly acting like you've been there before," he wrote.
The Rams are above .500 for the first time since 2006.