Here is the quote from the NTSB release:
"SWA 345 proceeded on the approach when at a point below 400 feet, there was an exchange of control of the airplane and the captain became the flying pilot and made the landing."
From this we do not know at what altitude the captain became the flying pilot, nor do we know who initiated the change in control. To me it is clear that they should have executed a missed approach and gone around. I have been through several at LaGarbage usually due to the preceding aircraft not clearing the active.