Your live rock is dead but that's not the problem. The problem is copper is adsorbed on calcareous substrates and is slowly released back into the water column. Fishes will be fine in the tank but inverts will never be. Some may survive for short periods of time but they will be slowly poisoned.
I'd throw away the live rock. Even if you think there is the slightest chance the copper can be removed from the rock, the cost of replacing the rock is worth your piece of mind.
I won't comment on copper adhering to glass or silicone.
I think if you want to recover the rock you have to wash with HCl and acetone and all sorts of other stuff that makes it not worth the trouble.
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