So you think that the thousands of US troops left behind and their commands will just turn their backs and allow all this to happen? For the hundreds of millions of dollars the US has spent on the Iraq war this seems a bit far fetched considering he had to flee to Iran since his army was routed by US forces and he lived in fear of returning. IMO, the US will have and probably has had their eyes on him for sometime and no doubt will watch him and his contacts and followers very closely. What you are proposing above doesnt seem to feasable in the forseeable future.
Hands of Debt? Who's debt? Debt from what?
In your above post you also seem to overlook that the Saudi's are the big kid on the block and they wont let Iran rule the ME. Hence they opened their airspace to the Israeli's in a time of need. Also the weapons purchase by the Saudi's that is on the horizon will push their military far beyond Irans capabilities in making trouble without serious ramifications for Iran.
Politics is the only thing protecting Iran from getting a foot rammed in their ass. They have already committed enough provable crimes to warrant it as well. They can quote their religious craziness as much as they want, but in the real world they know exactly what would happen and perhaps what will happen in the future.
The only thing they cannot predict is where the Israeli's will have had enough of Iran and her threats. Israel wont go down without atleast lighting Tehran and other certain locations up pemanently. Iran is no match for the Israeli's and they know it and this is the cause of all their rhetoric and threats.
IMO, All it would take is the reformers gaining office in Iran and then these theatrics all come to an end. Thats exactly why the regime is doing what it is doing to try and stave that movement off, but as you note with other points above, everything comes in time and there are no doubt alot more smarter Iranians then dinnerjacket, the Assa hola, and the regime. Its not rocket science and they know it and no doubt they fear it's coming.