Bootcamp failed to install Windows 10 Pro. Need some help.

I began to install W10 October Update using BCA. Installation was smooth until before it was going to restart.

Bootcamp said the installation failed and began to roll back the partition. After it was rolling back for about an hour, I canceled the partition rollback and attempted to delete the partition through Disk Utility. After deleting the partition and setting the format to Mac OS Extended (Journaled), I can't remove it. I need to merge the BOOTCAMP partition with my main partition to get that space back.

Any help would be appreciated. Thanks.