Probably not. But they can contact a security reseach company so they make a "crowdsourced" audit project, perform it and still leave a backdoor or two uncovere

Probably not. But they can contact a security reseach company so they make a "crowdsourced" audit project, perform it and still leave a backdoor or two uncovered. TrueCrypt gets an official audit and NSA keeps the backdoors - win-win. </sarcasm> And there is less chance that anyone else will perform an audit in near future. :(