Hacked sites

Hi, Two of my websites have been hacked and stolen, in that I cannot log in to the wp-admin. Is there anyway that I can remotely disable the use of all WPMUDEV plugins & themes on these websites? The websites are:

californiatowelsandscrubs.com

mariestowelsandscrubs.com

I do not have FTP access either.

Thanks in advance.

Graham J OConnor