In joint legal, the primary residential can.
With an injunction
Yes. With joint custody either parent can change the kids school or any major desicion. The ideal relationship you would both agree on this but reality is always different.
Joint legal custody, no, not if the other parent objects. You must secure their permission or failing that, the permission of the court which is the only authority that may override a parent's objections in such a situation.
Should not affect it, and besides, it's for the kids benefit.
If not , then YOU are on the couch. Kids need a stable environment and space of their own with either parent.
In most states that's considered parental abduction if you have primary residential.
Get a current copy of the custody order from the Clerk of the Court and take police with you to pick up the children.
Not without permission from the court with agreement from the joint custodial parent.
Unless you have the courts and the other parent's consent you will charged with kidnapping and the children will be brought back and you will lose custody and possibly your parental rights.
You would have to go back to court. Have your attorney file for a modification of custody order. Your ex would be notified through his attorney and would have to answer your allegation.
No, you can not, unless the custody order is modified by the court.
No. You cannot do anything to interfere with the other parent's access to your children. You need to petition the court for permission to relocate.