Damn broseph...
Are you using the newer SU app? That one should have an option or two to remove it, by for reinstallation by Play Store or by other means. Try both options to remove it several times if needed before any rebooting or rerooting. Gotta get that SOB off somehow. A factory reset will only restore it as is, minus settings, data, cache, etc...
If SU is a system app, you must be rooted to remove it or ANY system app, unless by the grace of God, you have the option to remove it in the systems app settings, or see if it's in your app drawer in the Play Store. If not try reinstalling via SU or the Play Store, then try any and all the above I've mentioned to remove it...mix up the order if one way doesn't work.
As far as the rebooting causing a loop, from what I understand the system must reset to reload into SU/administrator mode.
I personally have NEVER entered stock recovery on any Coolpad, can you send a pic of it to me by way of another phone or camera? Still hoping for a custom recovery. Not sure if a local store could reflash stock firmware or not, but seeing the recovery with my own eyes would help, and honestly I don't wanna enter mine unless I have to...