Actually, although that is what this guy is proposing, that probably won't happen.
What will probably happen imo, is that the EU constitution will be broken down and sneaked through each member states legislator in little bite size chuncks over a number of years until the end result is the same. These little changes will of course be deemed so insignificant that they won't require referendums.
I bet you're right and the powers that be in EU member states have already thought of it. Spoonful by spoonful, the medicine goes down.