Hello,
yes with SAS Customer Intelligence version 6.5 and at least hot fix Z77011 applied there is a new user action available named "DeleteAssetsQuickly".
This is documented in the SAS Marketing Automation Administration Guide 6.5, page 169, chapter 11, Command-Line Utilities.
Or take a look at this SAS Note: http://support.sas.com/kb/62/601.html
Unfortunately the syntax of the utility is not well documented. I am working on better examples, so please feel free to raise a TechSupport ticket if you need more assistance how to use it.
Thanks,
Beate