Asiata was the only member of the 2011 CU recruiting class rated with four stars by the major recruiting services. His departure comes in the same week CU coaches secured their only two four-star recruits of the 2012 cycle so far.
Vincent was recently suspended for the spring semester by the CU Office of Judicial Affairs after he was arrested in the fall semester for allegedly exposing himself to an 18-year-old female CU student in the women's bathroom at Willard Hall while she was showering.
Coach Jon Embree confirmed both departures in a text message. Embree is on the road wrapping up the final few days of recruiting in the 2012 cycle this week. National signing day is next Wednesday (Feb. 1).
CU coaches believed Asiata, a 6-foot-5, 295-pound lineman, had a bright future and could be a possible pro prospect in the future. Asiata and Vincent struggled academically in the fall semester and are academically ineligible to play. Asiata could fix that problem over the spring and summer semesters.
However, a new NCAA rule mandates that football players who become academically ineligible during the fall semester must sit out the first two games the following season. There is a one-time waiver of the penalty for each athlete.
"All I have to say is I'm sorry, and this was a personal decision that I made," Asiata said. "Also, I like to apologize to all the fans and I'm sorry I let them down."
Asiata said he plans to remain in school at CU through the spring semester, but he will not participate in football. He said he doesn't know whether he will continue to play football after leaving CU. He would have to be academically eligible when he leaves CU in order to be eligible to receive financial aid from another school.
"Honestly I really dont know," he said when asked ahout his future on the gridiron. "I'm going to pray about it because the passion is questionable at this point. I just need time right now to figure out everything because I know I have disappointed a lot of people, especially my teammates. They are the ones I care about the most, not the coaches."
Asiata, a product of St. Louis School in Honolulu, played 41 snaps from scrimmage spread over four games as a true freshman last fall. He also played most of the season on special teams as a member of the field goal and extra point team.
Vincent played in one game in his true freshman season last fall against Cal in September. He did not dress for another game the rest of the season, according to notes assembled by the CU sports information staff. Vincent could not be reached for comment.
Makiri Pugh, a senior-to-be in 2012, also is no longer with the program. He was listed as suspended at the end of the season for unspecified reasons. Pugh transferred to CU from Georgia two years ago as a defensive back. He voluntarily switched to receiver midway through last season. He finished the year sixth in special teams points earned for the Buffs.