User blog comment:Stryzzar/Who is the Greatest Antagonist?/@comment-24991976-20140609205642/@comment-27329394-20140611015344

That was due to competition. Courtney had to do it to win, similarly to when Alejandro defeated Cody in the finale - the only way she/he could win was pushing Justin off the tower or Cody into the water. Neither said they wanted to kill them. Therefore, injury was almost inevitable in that situation.