Pardons cannot be “reversed”.
I didn’t think so. But I didn’t think EOs could be. On that note, Biden can’t pardon himself , so he should be tried for his crimes (by EO, if necessary). If he doesn’t go to jail for lawfare, lies, bought pardons,etc. because of diminished capacity, all of his EOs should be overturned and the puppeteers exposed to do some jail time for treason!