A DBE? How is he actually interdicting anyone? Those things turn like a drunk little yellow submarine. All you have to avoid is either face him or trounce him in a turning duel until you can jump away to a new system. And even if he managed to catch you, how would he kill you? He'd need turrets to even hit you. So drop chaff, or heat sink, or hit silent running and slink away, he'll never catch you. He can't mass lock you, especially if you jump to a new system rather than SC. And his damage and aim are a joke.
Also, if he doesn't have a wake scanner (check his subsystems) then you can simply hide in normal space and he can never get to you.