“The Indians, knowing the bat was indeed corked, dispatched relief pitcher Jason Grimsley to retrieve the bat. Grimsley took a bat belonging to Indians player Paul Sorrento and accessed the area above the false ceiling in the clubhouse and crawled across with a flashlight in his mouth until he reached the umpires' room. He switched Belle's bat with Sorrento's and returned to the clubhouse”
Roid rage? More like Roid brain
There's a super cool animated retelling of that on youtube