Royce Gracie doesn't think Ken Shamrock's failed test for multiple drugs matters, because he won the fight.
Bellator 149 turned out to be a farce for a lot of the people involved. Both Ken Shamrock and Kimbo Slice tested positive for an anabolic steroid (and Shamrock also tested positive for methadone), and Dada 5000 ended up in the hospital for an extended period. One person that emerged relatively unscathed was main event winner Royce Gracie, even though the final sequence of the fight was controversial.
When Gracie was asked by MMA Fighting about Shamrock's failed test, he was quite succinct in response:
"I don’t think too much about it.