In this tweet, Onur, KRU's coach, confirms that they were given a list of known and forbidden exploits and that the cypher cam that JhoW used was on it.
The translated thread goes like this:
The decision is very unfair to @VivoKeyd. The admins should have detected the exploit right away, backtrack the round using the cronobreak, and give VK a warning. It had no impact on the victory and the penalty in my opinion is disproportionate.
Onur, I remember that they gave us the list of bugs and exploits in masters 3. Did they do it here?
Yes and it was in it. It has also been a popular exploit for the Giants case and I find it hard to believe that someone who played Sentinel his entire career doesn't know it too.