Clearly they have lost in the court of public opinion. They are, however, innocent of all crimes as of today, since there is no proof of any foul play. The court of public opinion has convicted them using suspicion and speculation.
Like their attorney said, the story about Nan and company doesn't sound logical, but it doesn't mean that it didn't happen. Is it likely? Hell no, but it doesn't sound like we are dealing with a normal group of people here.
No one on here knows anything for sure, and we won't until Erica is found.