Thank you for your question regarding the Delta Fixed Wall Mount for Hand Shower and I am happy to assist you today.
Unfortunately, once the cover has been clipped to the back bracket, there isn't an easy way to separate them, without damaging the parts, as you mentioned.
I am deeply sorry for the inconvenience this has caused.
If you could please refer to the email I sent to you regarding this issue or give us a call on our warranty line at 800-345-3358, we will do our best to rectify this issue for you.
Delta Faucet Company
Date published: 2018-02-21