We are all still praying for your Andy and that wherever he is, he is safe and comes home soon.
I'll tell you, my Mishu was adopted after being left outside to fend for himself for at least a month - maybe two. At first we had been letting him outside, against my better judgement. We live in a big complex and when he went missing (around the same time Andy did, actually) and then came back after almost two days (something he NEVER did before) that cinched it. Since then, I took him to the vet for his shots and decided that both of the cats are staying indoors, no matter how much my softie hubby wants to let Mishu out to play. He has been inside since and although he seems somewhat peeved about it sometimes, hearing what you are going through and having lost him for only two days - I just couldn't take a scare like that ever again.
Mishu goes for his neutering on Friday, June 2nd and hopefully that will help make his full-time indoor transition a little more bearable. I had been really tormented by trying to decide whether to keep him inside or allow him to go out during the day because I know he REALLY loves it out there, but your experience makes me believe that there is no safer place for them than in our home. We'll be moving to a bigger place soon with carpeted stairs for them to play on and I convinced my handy hubby to build them a kitty condo... That plus all the window seats they have should be plenty of entertainment for them.
Mishu is a very smart cat and I swear he understands me when I talk to him (yes I talk to him!)... I told him and Jo (my girl) about Andy and I know they are both thinking of him to and praying for his safe return (silly as that may sound, I feel it's true).
I am not a hugely religious person, but I am spiritual and I have had you in my thoughts since your first post. Your Cat Site family is with you in spirit and if there is ANYTHING that ANY of us can do, please don't hesitate to ask! I think I speak for most (if not all) of us when I say that we will do anything within our power to help!
K&J, Mishu & Jo