could someone actually hide their way out of something like this?

If you mean the resulting failure to attend/contempt of court charges:

It would very much depend on the totality of the circumstances. If the defendant is genuinely unaware of the case against them, they aren't really hiding from anything. The court has simply been unable to locate their suspect.

When/if the defendant is eventually located; it would be up to the court to determine if they had been sufficiently notified, and they'd have opportunity defend themselves by explaining where they've been and why the court hadn't been able to notify them.

If you mean hide your way out of whatever the original charge that had you summoned to court was, then no; you're just delaying the inevitable and potentially risking further charges. or you're just permanently fleeing to a country that doesn't extradite to where ever you're from...