Sort of...
If you want to have the cluster point to the same master disk (vmdk) then no, you can't do that in a supported fashion.
However - if what you are doing is more for test/dev and you can have the clusters shared disk be iSCSI or NFS, then you could do something.
Add to your vApp a filer, that can present the iSCSI or NFS disk, and use that for the shared Solaris cluster disks.
I know this is not the most common way of setting this up, but we have used it for doing some test and lab/dev workloads.
