Not once in that article does it even insinuate that the neighbor had been in that house this past weekend.
If you continue to adhere to the story that a wild orgy had gone on (please provide any link to a credible, substantiated news report) after Mrs. van Dam came home that night, you must also be aware that the neighbor in question, according to the very runours that you are clinging on to, was not in the house that weekend! He wanted to be part of the 'orgies", but no one would invite him.
I have provided verification for everything that you have questioned, now all you have to do is provide us with the news release that puts the neighbor in the van Dam's house between 9 PM of the night in question, and 10 AM the next morning.
Here's a hint, on the very article that you posted (post #792), it says that the police brought in specially trained dogs to see if these dogs could detect whether this man had indeed been in Danielle's bedroom. He's still a free man, guess the dogs found nothing.