Actually it is not only your SIM it is your phone itself.
So in other words in order to use ST again after a TOS you would need to buy a new phone.
And yes bricking is generally a term having to do with messing up rooting rendering the phone a paperweight basically....which after a TOS a paperweight is basically all it would be to ST as it won't be activated again.
~Luv to learn new things.
~Yes I have a phone addiction...and no I'm not looking for a cure!