You are assuming that deleted files are really gone. We'll see.
I expect that the prosecutor will make Twitter, Facebook, MySpace, and possibly cell phone companeis cough up records. I bet there is a lot of elelctronic evidence still to be found out.
Also, there may be physical evidence. A shower doesn't get rid of abrasions and bruises. Or torn spincter muscles. It doesn't get rid of sperm in the vagina or anus.
I suspect there are lots of people who saw lots of things and have no interest in helping the "Rape Crew" get over. When you drag a unconscious girl across town you are going to get a lot of evidence. Possibly even some non-intoxicated people who want to testify. Adults, too.
A lot of people are going to be put under oath and asked to answer questions. I suspect many of them, who did nothing wrong, will be told by their parents and lawyers to do as the law requires and tell "the truth, the whole truth and nothing but the truth". I suspect when a lot of people do that there will be a lot of evidence. Perhaps even evidence "beyond a reasonable doubt".
But, maybe not. That's what trials are for, after all. We're at the very beginning.
Simply based on the actual news stories. There is no physical evidence and very sketchy eye witness testimony.
Please, understand that I think they did something up to anfd including rape. What it was will be hard to get out of this crew.
Of course you are probably correct. Now that the case is in the state investigators and prosecutors hands more will be found out.