Just to try and keep things real...
The "nuclear bunker busters," assuming they ever get built, will be tested and shelved much like the famous "MOAB" weapon.
The only real place you've heard about using such weapons in Iran is from Seymour Hersh, who, to put it bluntly, makes a lot of things up. Almost every damn story on this subject tracks back to that one New Yorker article. You can bet your ass that this story is also what Kurt Gottfried (from the group that made the presentation) is referring to when he says "recent reports."
The administration and military have denied this at all levels. In fact, they have dismissed any talk of imminent military action at all. But hey, that doesn't make much of a story, does it?
Can we try and keep our perspective, here?