You are wise to keep your legal support system apprised of any previous emotional/verbal, physical, and financial abuse/neglect that took place while your father lived near a large family cohort in Colorado. Your obligation as a caregiver is to assure that does not occur again. You have also demonstrated that your father is content based on your efforts to arrange activities that are safe and enjoyable for him and minimize his lapsing into anxiety or fear in his environment. Perhaps you could provide those in your family who wish to have him back in their midst with a detailed summary of the daily/weekly scheduling that keeps your father reasonably content as he walks this journey of a disease that progresses daily. Of course, a family member in Colorado would need to take on the role of primary caregiver and demonstrate that similar quality activities would be in place prior to your father's return to his home including who will live full time with him. Do you think your commitment to your father's wellbeing can or will be willingly duplicated? Changing locations is traumatic for those with dementia. Your father is not "portable" at the whim of family members who are likely not well informed about his disease. If they were, they would be grateful for what you are doing to provide for comfort and joy for whatever remaining time your father has on this planet. You will likely remain your father's best advocate. Are you able to do so remotely?