Taylor had 74 tackles last season, when he was the first non-linebacker to lead the Aggies since 1978.
In the first two games this year, Taylor recorded a team-high 25 tackles. He had 15 in Saturday's 32-18 loss at Wyoming and 10 in a season-opening 23-16 loss to UNLV.
Taylor, who is from Pomona, Calif., has played in 31 games and made 17 career starts at Utah State. In the 2006 opener at Wyoming, he returned an interception 45 yards for a touchdown in the Cowboys' 38-7 victory.
Taylor's role on the defense will be divided among a handful of players, Guy said. The group includes junior Caleb Taylor (no relation), junior Roy Hurst and sophomore James Brindley. Another possibility is sophomore Maxim Dinka, a redshirt freshman who started his career at linebacker before being switched to safety.
In its announcement, the Utah State sports information office said Taylor would be suspended "for one year."
Asked if that meant Taylor might try to return next season, spokesman Zach Fisher declined comment.
Taylor has already used his redshirt year and would apparently need some type of hardship ruling to return. He sat out the 2003 season after arriving from Ganesha High School, where he was a three-sport star who also competed in basketball and track.
Utah State will visit No. 3 Oklahoma on Saturday at 1:30 p.m. MDT.