The body responds pretty quickly to dietary changes, so the results of ending the juice diet will be equal and opposite the results of starting the juice diet.
Temporary spasms aren't worth the anxiety IMO. Upgrading our nutrition is an ongoing process. Sometimes the steps are very small, sometimes we reverse a step that isn't working, but there's no need for weird extremes.
Lots of: urban hiking, cycling, sprinting
Lots of: fresh meat, seafood, eggs, organs, tubers, starch fruits, vegetables, meat fat, dairy fat, oil fruits
Some: cured meat, dairy protein, sweet fruits, rice, pulses, tree nuts, oil seeds
Minimal: soy, refined proteins, sugar, liquid carbohydrate, grains, refined oils, peanuts