Leaving the European Union: Does an OUT vote automatically mean We're OUT!?

After Britons and others go to vote in the referendum on June 23rd, can the winning majority of "Outers," if indeed they are the victors, assume it is all home and hosed and a mere formality for the UK to say, "Nice knowing you chaps, but were off on the next plane or ferry."
Hardy. Even if the wounded losers - which, after all, are 50% of the sitting Tory government and practically all of the Labour opposition - take it on the chin, smile bravely and check the want ads for jobs as plumbers and shoe salemen, it will take at least two years and perhaps longer to complete all the red tape to see Britain as an independent nation again. During this time, we will have to continue to abide by EU rules to a great extent, although we shall immediately lose the right to decision making.
It will be a period of adjustment while a myriad problems are addressed, not least whether the millions of ex pats on both sides will continue to be able to live in their country of choice without facing expulsion, or higher taxes, medical bills, utilities and more. It will, frankly, even under the most well oiled of conditions and benign intentions, be a bloody mess!
But what if the IN-ers aren't good losers and bow to the will of the majority of the people? Does an Out vote automatically mean those wanting to escape the EU can rest on their laurels and triumph over Brtain's fairly-won independence?
Get this. The referendum is NOT legally binding: Parliament would now have to pass a new slew of laws that would serve to extricate the UK from it's ties to the other 28 nations and satellites. This lengthy legislation would begin with the law- makers repealing the 1972 European Communities Act.
Then the House of Commons and the House of Lords would need to vote favourably on the dramatic changes in the nation's fate, and informed observers say these august bodies could vote AGAINST ratification of the desire of the people!
This would occasion a struggle by the full House of Commons and Lords, versus the Tory Government, whereupon the the treaty would receive full ratification IF the Commons did not move again against ratification within 21 days...and this process could be repeated ad infinitum, apparently!
Any serious attempt by the sitting Conservatives to go along with this process and not to whip the insurgents wanting to keep membership in order, would be political suicide...UNLESS the MP's managed to force a General Election and any new party favouring staying in Europe emerged from the debris, they could rule that their election by the people OVERULED the referendum vote, and then annuling the results!
By then, of course, we would all have gone mad and abandoned the UK like lemmings, sinking gratefull under the waves of the Channel and the North Sea. The Channel...?? A Gallic chorus reminds us it it now called La Manche and, further more, the language of the EU sans the UK is now our glorious and pure Francais! So digest that with you ros bif Anglos!
You must see this is an oversimlification of a very complex problem, but Murphy's Law tells us, "If the worst can happen, it assuredly will!"
Never underestimate the sneakiness of politicians!