Anti-SLAPP is a merits argument. A jurisdictional argument takes precedence over that since if the court lacks jurisdiction there's no point in hearing anything on the merits. So the merits part of the case was put on hold while jurisdiction was decided.
That's why this motion backfired. Now Meyer has got a fairly substantial amount of discovery in before the anti-SLAPP motion gets decided and can plan for after it. I'm not sure whether Meyer already has enough for an actual motion for summary judgment in his own favor without even having a trial first, but possibly he does. If there aren't any material facts left to decide, there's no need for a full jury trial. The case could be decided outright in his favor before a jury trial, possibly with a jury trial solely as to the issue of damages.
That's a little ahead of things, though, and there's probably still heavy lifting to do before getting there.