Corruption and weekly chest?

I couldnt find a actual answer, If i open weekly chest and or get a drop in healer spec with loot set to healer can it still drop stuff like infinite stars ect. Like this week i went MW since my WW is now high end geared. Will is be possible to get a item in chest with infinite or something as MW pref. on my staff even if i got one? Im feeling lucky i got 2x staves in 2 weeks on my ele shaman ! Thanks for the answers!