Wow...it really looks like Xi saved CCP/China. He seems to be a godsend to the Chinese nation at a crucial period , because it looks like Chinese government was deeply rife with corruption and factionalism and they were going the way of the former chinese nationalist government ( KMT).Not sure about this specific instance but there have been others where his title got stripped. Most notable one, and the first domino to fall, was that he got taken off CAC's site. Going this long after the initial sign that something was up without a formal declaration of prosecution or ejection though suggests that his offense was likely minor. We'll see but it's unlikely he's in serious trouble. For now the likely conclusion is that he's just being made an example of for disciplinary purposes.
I red the CIA file that was leaked by wikileaks in 2009 about Xi(that was years before he took power) , and they detailed how Xi was known for having strong principles, focused on hus goals of getting to the top, ambitious and incorruptible(though it was also noted that he is eager for power) . That was when he was still going through the lower echelon of the party . that's what convinced me that he is serious about routing corruption in the system, which he was quoted as saying is the greatest threat to the party.
Hopefully the system can carry on with his vision after he leaves power and be more systematic/normalised in the party. Remains to be seen though .