If that was his intent he shouldn't have handed over any pin. This looks like he was hiding evidence of wrongdoing and he will probably be charged with it. I am guessing his only hope will be that they denied his request for a lawyer.
His rights were already being violated. He was falsely arrested and denied his rights to an attorney.
They can prosecute him (and probably will) but he's got a pretty strong civil rights claim against the federal government for a false arrest and illegal search and seizure.
You can't arrest someone without a warrant or a reasonable suspicion of a crime. These thugs had neither when they arrested him, just that he's "a terrorist". That's why they were trying to get him to confess or commit a crime. That's why they didn't want a lawyer to get involved.