I assumed a tilt is actually a physical disruption in the manner of pinball machines.
But regardless unless it's actually misprogrammed in such a way that hitting the top progressive necessarily triggers a bug (as in the case of the Stations VP someone posted about), it would be a remarkable coincidence if just randomly glitched then.
But actually it seems likely it was the same kind of problem as at Stations and nobody knew about it because the top progressive so rarely hits.