1) All Vickers has to do is get the FBI to INTERVIEW Ralph. There's enough circumstantial evidence to make this happen, whether Ralph actually did it or not.
2) Ralph is a pathological liar. He will ONE HUNDRED PERCENT lie to the FBI.
3) If you lie to the FBI, even about what you had for breakfast, you are FUCKED.
4) Martha Stewart didn't go to prison for insider trading. She went to prison for lying to the FBI.
5) Federal prisons require the convict to serve 100% of their sentence.
This is how you win, Vickers.