Hi Glen,
I am not sure whether you can leverage SRA (I think you can't actually), but why not do a 'direct' scripting, invoking commands on the actual filer for all required operations (breaking the mirror, etc.)?
The script can be easily kicked off within the SRM recovery plan when required.
And BTW - at the end of the day, SRM is just a neat GUI front-end for scripting anyway .
Regards,
Radek