I think what is ment by being to attached is in reference to being to emotionally involved. Don't quote me, but for me thats what i get. Makes sense as well. For someone not associated or related, or however, you may get more solid feedback as far as communication. Example, you may conduct some way of contacting Justin and get a response that you, in your emotion state (being close to Justin), may take it a different way than it may really be ment. When someone completley blind to the situation can try to communicate with Justin and get the more solid facts. Kinda how some investigators send mediums in without knowing the history of the site. It gives solid information that is not contaminated by memories, love, emotions etc.
Im NO EXPERT!! LOL Just stating what i get from the thread.
Also i wouldnt pursue anything as far as this Macke guy. Do your own research and keep it private. If you feel you have some valid information, share it with the proper people.
Again, just my opinion.
Good luck with this