I think that's why he came forward. It's been a month.
Either he just realized they weren't cops and came forward or he's looking at the $$$$.
But before anything can happen he needs to head over to SFPD and file a report.
If he doesn't then only several possible reasons come to mind.
1) He's lying and this whole thing is a hoax, which I doubt.
2) He is legal but maybe someone at his place isn't. So he would rather not have anyone investigate that. And maybe that's why he was so quick to let Mr. Colon and friends go through his stuff.
3) Apple gets to him first and it all goes away.
It is just a very strange story. Now clearly the story is either true, or it is made up. If it is true, then the following things happened:
1. Apple employee loses his iPhone 5 prototype.
2. Apple employees claiming to be police search someone's place. After searching the place, one of them leaves his phone number and an offer for a $300 reward for the phone.
3. The story about the lost phone and police searching the place is published; but no mention of the phone number and reward offer.
4. San Francisco police tells publicly that the story told isn't true; there was no police at that place.
5. The person whose place was searched now remembers that one of the supposed police officers actually left a phone number offering a reward.
If the story is not true, then the following happened:
1. No Apple employee lost his iPhone 5 prototype, therefore no police or Apple employees searched anything.
2. Someone made up a story with claims that police searched their place. The story is published.
3. San Francisco police tells publicly that the story told isn't true; there was no police at that place.
4. The claim now changes, no police but some Apple employee left their phone number.
From the linked-in page that was posted here, we know that the name of some Apple employee working in security was publicly visible. Don't know how hard the name was to find. Someone living in San Francisco may post whether the guy's phone number was publicly visible.
Everyone can decide for themselves what they think is more likely. I assume that the story is either completely true or completely made up. The fact that the story changes after the first version was proven to be not true speaks against it.