The NSK cautioned Abi and return juryo Wakamotoharu for a video they posted on Instagram (looks like Abi's account is deleted now), where the 2 use adhesive tape to tie the others legs together and stick it on the mouth. Comments like "Is that becoming of a sekitori?" reached the NSK and for this violence-like display the 2 were cautioned and also ordered to write a letter of apology and repentance. https://www3.nhk.or.jp/news/html/20191108/k10012168721000.html
The next level-down in violence scandals? At least they are still allowed to compete.