Only way to get people like redon to post spoilers is to simply not give them an ounce of attention. Don't like their posts, don't quote them, don't mention them, don't talk about them (ironic i know), act like them posting early spoilers is no big deal. Eventually these leakers will start to crave more attention, they will try to one up each other to attract us (their prey). As time passes, they will be posting spoilers by themselves as early as they can. And if we become fully addicted again, they will postpone releasing the spoilers to finally receive their due fill of internet attention. It's a vicious cycle all around, almost like selling drugs. If we break out from it, leakers won't just be racing to post early spoilers. Expect them to post full summaries with HQ fully translated and typset pages by monday morning if not earlier. This is how much leakers crave attention. They crave attention as much as we crave spoilers.
In short, reject spoilers. Reject redon's drugs. If he doesn't find customers, he will start selling them for free.