You aren't obligated to talk to LE to begin with.The only way if you are innocent of any wrong doing in the events you are being grilled about by LE is to tell the truth. Making up a lie is not covering your *advertiser censored* but covering up something you do not want someone to know or think about you directly related or not. Whether he did something stupid-- as I am and others have conjectured before, like take pics of the cash on his phone he was covering something or thinking he should cover big or small. Yes and I agree even if you are totally innocent of any wrong doing you might be scarred, nervous or whatever, but if you start lying there is a reason, whether big or small and the fact that you are being questioned well you are caught up in it. As far as being in danger LE believes there were others involved this they have communicated. We don't get to see everything LE knows from the Witnesses only what they need for the warrants and charges for Wint. Maybe those witness know more and the other perps know that those witnesses know more.
He could have asked for a lawyer and refused to talk.