Ahrrrggg...! You made me cry again.
Seriously, my youngest daughter was born with CP and to hear the diagnosis was hard, even though I knew. Thoughts flood through at that moment and after as caring for her is a constant struggle.
When I saw the picture of your boy, the same thoughts went through my head. You can tell that Owen was a good boy and innocent. You say to yourself that what happened is unfair to a little kid and then you also ask yourself why did this happen to me and my family. The truth is that it just happens sometimes. Most importantly, you also realize that you loved him, showed him that, and took care of him the best that you could. There are other "parents" out there that might not of. Owen was lucky to have parents and a family that cared and I am absolutely sure he new it. You can just tell how good and happy is was from his pictures. <-- That is the truth as I see it from miles away.
In my opinion you didn't overstep the bounds. This board is a community and one of the only ones where people seem to really get involved while acting human. In many ways it is not unlike having your buddies over to work on cars. As buddies you end up talking about life as well. Before you know it, you know a lot about each others lives and can't help but to be involved from time to time.
Thoughts are with you!