The three remaining (the Musketeer and the Two Amigos) seem to be enjoying the tadpole life. So much so that they have have apparently paused metamorphosis. They should have all have made it to the froglet stage by now. I've read about some species of tadpoles sometimes doing this then resuming next spring/summer but I haven't read that about this particular species.
A photo of the Muskateer:
A photo of the Two Amigos: