So there's a few possible ways to interpret this..
* There is an actual hereto-unknown flaw in TrueCrypt's algorithms or implementations of algorithms that can be exploited.
* They are referring to the only known attack, wherein keys can be recovered from RAM if the volume isn't unmounted correctly.
* This is FUD designed to push people away from less-breakable encryption and onto software which actually /does/ have backdoors.
* This is a hoax (pay special attention to the detective's names on the slide)