A Boston University grad and the former MIT athlete who sexually assaulted her came face-to-face one last time in court yesterday — with the guilty 22-year-old forced to apologize for what he did two years ago in a dorm room.“I would like to apologize to (the victim) and her family that are here today for my inexcusable behavior that night,” Samson Donick, who played guard for the Massachusetts Institute of Technology’s Engineers basketball team, told Suffolk Superior Judge Janet L.