It seems odd that the article focused on a rip current. While there can be such currents at certain parts of area beaches, they tend to be small and fade out just a short distance from shore as the water depth increases. Rip currents can be deadly to unprepared tourists who get sucked in from the beach and panic but a diver on the surface with a wetsuit and BC will just float. At worst a diver might be stuck a short distance off the beach and need to be rescued by a boat, but even that is highly unlikely at any of the Monterey area shore dive sites. Rip currents are not siphons and don't pull divers underwater. So, I suspect that the main cause of this incident was something other than a rip current.