Being that dispersion will remove snares for shadowpriests once the shadowpriest is snared, once the shadowpriests is no longer dispered, will there be a time that the shadowpriest cannot be snared? I know that rogues snare poison will be re-applyed on the next swing. And I think (correct me if I'm wrong) a warrior can re-apply hamstring because its in instant cast.
I am excited to see if this will change anything. From what we know now, its just prolonging a shadowpriests life by maybe a 2-3 seconds. (ie. it changes nothing)