Engineering have determined that CA Spectrum is not vulnerable to this vulnerability. I have written a techdoc with more information here that Engineering provided.
https://comm.support.ca.com/kb/is-ca-spectrum-vulnerable-to-cve-2018-11776-apache-struts-remote-code-execution/kb000112642
Best regards,Glenn
Thank you Glenn_Shoemake for the KB, it was much needed.