The NSTB has been looking into that ground loop at La Guardia last month. As in why did the nose gear collapse upon landing? That ain't supposed to happen, and this is the first time I heard of it happening to a 737. Or to Southwest, who is a pretty reliable operator. About all they say is video from bystanders shows the nose gear contacting the runway BEFORE the mains. That is unusual. Normal practice is the ease the main wheels down on the runway, and then carefully lower the nose. Carefully so as not to break anything.
After the nose gear broke and the plane sat down on it, the gear was jammed up into the bottom of the fuselage, damaging an electronics bay. Hmm. Glad I don't have to fix that.