Takitaki has been in Provo for less than a month and began taking classes on June 23 when BYU's summer block (semester) started. It is unclear whether the 6-foot-3, 240-pound freshman will be allowed to return to the team next year.
BYU athletic department spokesperson Duff Tittle said Mendenhall is on vacation this week, along with most of his assistant coaches and most members of BYU's athletic department and administration.
Takitaki could not be reached for comment.
Ranked as the No. 24 inside linebacker in the nation by ESPN.com out of California's Heritage (Menifee) High, Takitaki was expected to compete for playing time this fall as the Cougars look for replacements for leading tackler Uani Unga and All-American Kyle Van Noy.
As a senior, Takitaki helped Heritage go 13-1 and made 81 tackles and 3.5 sacks. He also played on offense as a running back, picking up 1,673 yards and 25 touchdowns in his final two years.