I agree with the others.  Try just drinking protein for a while and make sure you get lots of fluid.  Dehydration can make you nauseaus, too.  If he continues to be unhelpful then find another surgeon for a second opinion.

he needs to be straight forward and speak to you as an adult.
he needs to tell you, that if things dont change , he could wind up giving you a reversal..
i hate when ppl talk to me like im stupid.
i would just try to do whatever it takes to get your self into the program of feeling better . im sorry you are having a tough time.
i havnt had surgery yet , so i have no real answers to give you.. but there has to be a better way of having something explained to you..
you also need to talk to him and not hold nothing back. if he says anythign that bothers you, 
i would be telling him your concerns . dont ever hold back anything you need to say . this is YOUR life-this is YOUR health. other ppl sometimes do not care as much , because its not them..
do what needs to be done . say what needs to be said .

 I too was thinking yesterday that he was trying to scare you. Why I don't know and think it is pretty stupid but if he got you thinking about how you are eating differently then maybe it helped. 
I know going back to a full liquid diet is not what you wanna do. BUT I think it is in you best interest to do. Your pouch has been thru so much that it needs to catch up and heal. Will it be fun no but it will help I bet.

I too was feeling like crap lately so tired with no energy and then I decided to make sure I got more protein in everyday then was told. And I am now feeling better little everyday. So make sure you get in your vits and your protein....and as always your water.

My surgeon told me anytime my pouch wasn't accepting the new food stage as I progressed from liquids to revert back to the prior stage and stay there a few more days, then try again to go to the next stage, but never to ru****  Also to only try one new food at a time at the new stage. 

I hope things get better for you soon. 

At least now you know your not getting a reversal and can focus on finding food combos that work for you. 

if you can't hold anything down - then reversal is in order. I think he may be hinting on something.. and trying to tell you that this may be a possibility.