Not all SM-2s have a kinetic warhead...the ones fitted to the "ABM" DDG/CGs have those, and that is due to the nature of their patrols. They are designated anti ballistic missile patrols, and have set areas they deploy to.
Those that act as area defense for CVNs and Amphibious Assault groups would still have a fragmentation style warhead which DOES NOT turn 180 and engage from a rear aspect.
Actually, the RAM, ESSM and SM all engage head on...and the RAM has an advertised 99.5% success rate in testing, which is why it has replaced some PHALANX mounts.
Is there a way to correct the aspect that the missiles engage from and accuracy? I to have noted a less than acceptable success rate for RAM and Phalanx.
Now, with certain Russian anti-ship missiles, there is deceptive maneuvering involved in the last stages of flight, but the RAM would not be spoofed...that was an 'anti-phalanx' technique and assuming this is a future game, would not be effective.
So I definitely agree with VLadapo63 and Rear Commander...some bugs/issues to fix