an orc pack not a cause for concern why?

In the hobbit movies saruman talks about how sauron is gone ect, but an orc pack under the influence of azog who in the films basically the most powerful orc around not a cause for concern?!, the fact this pack has took up residence at weathertop, gone near the shire and dared to cross the bruinen is an not anything concerning for saruman is confusing. Maybe he sees azog and his pack as a good distraction for himself