Yep- that threw me - I read his post but no reason to take the backing plates loose -
Ive done it that way several times over the years. Much easier to do it this way than break the ball joint loose. ( aka no pitchfork tool or BFH required to break the ball joint loose. )
This way the lower ball joint and associated suspension components come out the with the K frame / lower control arms / tie rod ends intact.