[SPOILERS] My theory regarding Vincent D' Onofrio's character

Hey guys, guess this is the first time I write fanfic haha, anyway here goes, I think that Vincent D' Onofrio's character is responsible for the burglary. What I mean is, I'm pretty sure he sold information to the burglars. That's how they knew the house had valuables in it and that only women would be present when they striked.
There are several clues hidden in the film that prove this:
- Vincent D' Onofrio/Frank is depicted as a loser that frequently borrows money from Bruce Willis/Paul. In the restaurant scene when he asks him for money it's pretty clear he's done it before, judging by Paul's reaction. However a few days after the break-in he already has the money and is ready to return it to Paul. How did he collect it? Clearly he was paid off by the criminals for tipping them off.
- Frank did go to that italian restaurant with Paul's wife and daughter, so he obviously knew that Paul was working (since he wasn't there) and it was a fair guess that he would be very late that evening. Maybe it was then that he told the crooks to go rob Paul's house?
- Frank acted all suspicious when the daughter woke up from the coma. For someone that was so close to his niece, his reaction is very weird; when she wakes up he just looks at her all scared-like and leaves to hang out at Paul's office instead. Why? Maybe he's feeling guilty for betraying his family just for a few bucks?
- Frank seems pretty unaffacted by the whole ordeal (to be fair this can also be said for every other family member too so I don't know)...
- Note how the burglars don't even ask if there's a safe in the house. They already know it. How else could they be so sure if not for Frank telling them?

Thoughts??