Am I correct in understanding inorder to recertify for CCSP, one has to pass one of the five tests? Such as passing 642-503 SNRS OR 642-502 SNRS would qualify for recertification?
I believe that as long as you pass a 642 professional level exam your CCSP will be recertified. This 642 exam can be either one of the current CCSP exams, or a current 642 exam from any track. For example, you could pass the 642-642 QOS exam from the CCIP track and it would recert your CCSP. Alternatively you can pass one of the CCIE written exams which will also recert you CCSP.
Hope this helps