Some of these diversions can work out, but it is unlikely that 13351/12295 will be diverted. 13351 was diverted via PER on an experimental basis once and it created a big ruckus at that time. Since then SR has not tried that again.
Given that these are also the only daily trains to Patna and DHN/RNC/TATA from Madras, there will be many objections to letting them bypass MAS.