Absolutely normal to experience stalls after surgery OP. We all have them - and I mean ALL.
What matters is how we react to them. They can be demoralising, demotivating, de-everything!!
I do see that you have included the words zombie, dissociated, automaton, emotional shock, shut down, apathetic, superficial and others - in just one post about a stall.
I totally understand that this might result from an in depth knowledge of the psychology of weight loss, or just psychology generally. I do hope that you can focus on how well you have done (and will do!) and are having lots of support from wherever you can get it.