Hello.
You can configure VCOps to send SNMP traps to any external system that supports such input (most mgmt tools should support it).
Once you resolve the issue in the third party system in theory the VCOps alert should also automatically cease after a couple of collection cycles. I don't think I know some easy mechanism to cancel VCOps alerts from outside - someone can correct me if I am wrong.
Thanks,
Alex D.