I think what he reported is true.Akash has some ABM capability.this missile probably follows the approach just like Russian ABM systems like A-35 and A-135,which uses Nuclear Warhead to destroy Ballistic Missile.though,I don't know how much it is applicable for a medium ranged SAM like Akash.
read this..........
Akash was also tested in ballistic missile role and offers air defence missile coverage of 2,000 square kilometres.
It can carry conventional and nuclear warheads weighing up to 60kg. The integration of nuclear warhead allows the missile to destroy aircraft as well as warheads released from ballistic missiles. It can operate in all weather conditions.
ARDE built the nuclear warhead while HEMRL produced the propellants.
Akash Surface-to-Air Missile (SAM) System - Airforce Technology
ABM-35 was developed to counter multiple nuclear tipped ICBMs with a single high yield nuclear warhead.for Akash's case,it'll probably use tactical nuclear warhead to destroy incoming nuclear warhead in short range.