First of, its one interupt with and added silence effect and ht with silence (which shares dr with them selves and every other silence btw) and also last time i checked your maelstrom weapon reduces the casting time of your nature spells and hex is a nature spell.
Also: GET MORE RESILIENCE AND LEARN TO USE YOUR DEFENSIVE COOLDOWNS.
p.s. warrior need tuning and are getting it in next patch (in a completely wrong way, but hey its blizz after all) but yeah complaining about the every little thing is annoying.