said by Hawk:
Perhaps installing a "Clean Out" in this area and bring it to grade might prove beneficial since you've gone this far.
The cleanout is right there, but it's useless in fixing a broken pipe. It's just good for punching a 1 inch round hole through the root ball every 4 months. The pipe would probably completely collapse in a couple years anyways. It's literally broken into two sections that were only held together by the surrounding dirt and pipes on either end.
The grade is fine, idk how you guys are gauging the grade by looking at a picture of one tile and a clean-out T....