#1- I have no idea
#2- same
#3- Depends on the therapist and how good he/she is. If your child is 9 years old, chances are he is caught in the middle of wanting to make cp happy, and being loyal to you. A very tough situation. At this age they can make or break the case simply by either continuing the lying or telling the truth when talked to alone. Also, therapists are taught signals of lying, not looking you in the eye, etc. Most kids can't lie well at this age. Lets hope that is the case here. Also,
#4- I would say cp is stressing him out, excellent question.
#5- LLSW, should be LMSW, Licensed Master Social Worker, someone with a Masters Degree in Social Work, I would check it out, and request a child psychologist rather than a Social Worker to work with the child.
Or a child psychiatrist, either one, but do some research first to find a good one.
#6- Absolutely. Tell her you are more than willing to do any testing needed.
Also, I have a hard time believing anyone can accurately determine anything without speaking ot both sides. MOST RELIABLE AND PROFESSIONAL therapists will not make any decisions without speaking to all involved. You may be able to get the testimony thrown out if it is negative towards you as it is biased, and the person did not speak with you about anything before making a determination of what occurred.
You need to get your attorney (get a family law atty) on this pronto! Also, if you have pictures, video tapes, etc., of when your son is at your home, that would be good also.
Hopefully you have searched the archives for information regarding this, which will help you immensely. Good luck!