That's a pretty solid review, I'm glad you liked the show :D
I'm also sure that they improved tremendously after the Grammy shitshow, but I can't help but figure that this was a business move predicated on the other members' inability to show up and deliver on a nightly basis.
I'd imagine it was a business move predicated on Wilson and Love's vastly different ideas of what The Beach Boys should be. Love likes the poppy hits, Wilson likes the personal 'obscure' tracks - unfortunately, Love owns the rights to the Beach Boys. I imagine it was something along those lines, with Jardine siding with Wilson.
Who knows though.