there is a way to SRM, actually, treating the vApp as 2 separate VMs.
take a look a those KBs:
http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=2031890
http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=2031891