Yep, they're trashed. No matter how you try to clean them, once the brake gets a little warm, more oil will seep out of the linings and contaminate things again. I've soaked linings in various solvents, heated them, sanded them, etc. and nothing has ever worked. Bite the bullet and replace them.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!