Yes much paranoia indeed.
There are some disfellowshipped friends of mine who still believe its the truth, yet paradoxically are not doing anything to actually come back. They are living contrary to the "truth" they believe. I have recently contacted and visited a very good friend of mine who was DF'd 6-7 years ago for being a sexual man whore at 19. He's now happily married, with 2 kids and recognizes his past mistakes. I only contacted him because I knew from previous emails throughout the years that he was never coming back. Once I told him where I now stood, he almost cried. It truly was like a real resurrection, our friendship picked up from right where we left off, no awkwardness, just a lot of apologies. However, I had to educate him on what I can and can't do right now and how important it is that he keep our friendship out of conversations with his jw mother and step father. His step father happens to be my best friend's uncle haha, so the possiblity of it turning ugly is very real.
You have to explore the risks but in the end, if you know you're going to be gone soon then there is no point in delaying inevitable friendships.