Theory time wee woo
If all the things created by Caine are just gone now [Like the swear filter, the Circus, presumably any mind alterations] that has me wondering. Is Abstraction still possible now that he's gone? Or is there really no way out for them now?? Bonus, Gooseworx hasn't revealed their real names which means it's probably plot relevant, so that's giving me the idea that in the next episode we're gonna get their actual names from outside the Circus awawawa
Back to the first thing though, we see this ominous frame of Jax. Given how near to abstraction he's been in the past few episodes, what if this was his mind trying to abstract, but it wasn't working because it's not possible anymore? [Either that, or this is just symbolism and/or him abstracting anyways]