I did, and Juugo Clan members went berserker when they collect some Shizen Energy. In this case, the amount is excesive... it is not possible. The reason of why Juugo was able to reach lvl 2 without losing control was Sasuke as an incarnation of Kimimaro, but even under that circumstance he used enough energy for himself and only for himself.
But in this case, we are talking about enough Shizen Energy to cover a complete Susano and the power of the Kyuubi Cloak... that's crazy, he should be in berserk status! It's too much Shizen energy.
It's not logic, no matter how you look at it.