Over the weekend, Sling TV slipped up. Badly. As Wisconsin downed the undefeated Wildcats of Kentucky and Duke did what Duke does, Sling TV saw major interruptions. After a massive number of sign-ups — which naturally led to a huge uptick in streaming — Sling TV failed. It was the wrong time to fail, and with the wrong content. A major Sling TV draw is live sports sans-cable, so Sling TV’s issues during the Final Four was troubling, but ultimately tells us all that Sling TV is on the right path.