Nah, worst that can happen is you get arrested if you try to go back or are in a country with an extradition policy, but that's only if it's considered a criminal case (e.g. espionage instead of no-compete) or there's a warrant out, else a no-compete clause is a civil matter.

And besides, while in the Netherlands people do sign no-compete clauses, in practice they're not enforceable by law. Or so I've heard.