Thanks for your question.
Yes, you can feel these symptoms as part of withdrawal symptoms.
These are caused by muscle spasms.
Cymbalta is a relatively new medication in the same class as Effexor. We do know that withdrawal from Effexor gives symptoms of electric shock type sensations. Though the withdrawal from Cymbalta is not that well documented, it could potentially similar symptoms of withdrawal as Effexor.
Instead of taking the Cymbalta every other day, I would recommend tapering the dose and taking it everyday for a few weeks, and then stopping. Are you cross tapering the Cymbalta with another antidepressant? Or are you taking Cymbalta for diabetic neuropathy? If you take another antidepressant as you are weaning off the Cymbalta, your symptoms may not be so severe. I hope this answers your question. Good luck!