Here's a link with a story about it
MMA in Japan: 2007-01
The whole thing was a huge stink at the time and somethings die hard. For me, I was pissed that he beat Sakuraba's ass while he's yelling at the ref about the grease. Akiyama admitted that he had "Lotion" on but not grease. There is no fine line, you just can't lubricate yourself before a fight. In most sports the evils of cheating don't involve someone else being beat senseless and especially not the lovable Sakuraba.
As for the glove who knows, sounds crazy but so does the lotion thing...