Nice capture.
I believe this is just to avoid loco reversal at Tumkur and Bangalore, as the train has barely 30 minutes turnaround time at both places.
Push-Pull needs modification in the rakes and needs control cables to be run all along the length of the rake, with IV connectors provided for the locos. These locos don't seem to have any such arrangements, and as far as I am aware, no self-generating ICF coaches have been modified this way.