Those obviously are nothing but excuses in order to annul Orochimaru's technique. Pitiful.What kind of technique is it? What are their conditions? It's just like Shunshin no Jutsu, which Shinobis are using outside of a fight to disappear from the place. I remember that an Anbu used the same technique after he has spoken with Tsunade, to sink into the ground. Shunshin no Jutsu varies. Here's another kind of Shunshin:You must be registered for see links
It's not a technique suitable for fight.