I think that the cop bashing here is unwarranted. I have dealt with police over a hundred times in the last 5 years, and in every case but one, they have done a great job. That's not to say that there could be bad apples.
The topic has definitely strayed from the first post, but I think it's important to remember that nobody was forced to do anything here. It seems that Crunchbite wasn't hauled off by the Gestapo. It seems that he volunteered his assistance. Sure he may have felt pressure, but that's what cops do.
I'm sure at any time he could have walked away. It's called police work, and it's how they get their job done most of the time. Just remember, you do have options.