I immediately deleted Bitcasa from all devices less another device become "mirrored" (or should I say "mired") within their cloud service.
I checked online in the support community and found this was a huge problem among many users. Supposedly all you have to do is remove the mirrored option (which I never set up) on the drive that is being mirrored and this will remove the mirrored content in the cloud. Doesn't work. Then there is an issue with two different versions of Bitcasa being used: a legacy version and a current version. It's a big mess that Bitcasa has not addressed. Here is a link to one of the ongoing issues; it may not be accessible without a Bitcasa login account: http://support.bitcasa.com/entries/23086582
I submitted a help ticket, but to date there has been no action whatsoever.