let me know if I can help further.
Hello and welcome to justanswer.com
Maybe I can help as I have done this job many times. There will be no need to remove or bend that cover. The lines are exposed over the diff. What will help is if you lower the rear subframe you will be able to slide the quick disconnect tool on the line. To lower the rear suspension remove the front bolt and bracket and the 15mm through bolt holding the rear X brace to the body. You will need to support the assembly while doing this.