Fixing a popped open joint.

[Edwin Santos]

Yes, ripping, jointing and re-gluing is the "right" way to handle this.
However, I'd be interested to hear what happens if you put a good strong clamp on that end of the top and see if it closes the gap with mild to moderate pressure.

[Erik Christensen]

if you have a track saw with a good rip blade it would take 5 minutes to correct - rip along existing joint - with a good blade you have a glue ready surface on both pieces, clean up edges with acetone to remove teak's natural oils & epoxy back together

[Mel Fulks]

All of the proposals would work. But he bought a table because he didn't want to make one. You could send the top thru a
widebelt and have that pressure pop another joint ,and get an estimate for fixing that while paying for the sanding. An antique would be fixed with a sliver to "preserve the old surface". Let the surface get old.