That deposition video was at her CAREER peak and TMZ has already reported, from her lawyer himself, that she lied because Luke told her he would ruin her career and life if she ever said anything about the rape.
Luke's biggest reason for suing Kesha back? "She's in it for the money!!"
Luke
made her. He already takes all her money which is why she tours to like, colleges and stuff.

He forked himself into producing her TV show, took that money.
Luke won't let her go because he is doing what he said he would (try to) do all along: ruin her career/life.