Actually, I have umpired a baseball game. If you didn't see something, then you didn't see something, and having a fake pow-wow of people who didn't see something doesn't enable someone who got it wrong to get it right. Have you ever heard of radios?
So now you think the umps carry radios on the field? OBVIOUSLY at least one of the other umps saw the catch. Like cosmo said, the important thing is to get the call right, and they did. BTW, how many games have you umpired, and at what level?