Yes, but I think it's actually something much more significant than that actually.
I could be totally wrong, but I think Arrow has a problem intercepting maneuverable threats OUTSIDE OF THE ATMOSPHERE at extreme or higher Mach speeds...
Hence seeing multiple penetrations, immediately followed by the first ever combat use of THAAD..!
No, Arrow does not use a DACS/TDACS to maneuver, it uses a gimbled rocket sticking out the back end.
At extreme Mach speeds that these IRBM's are coming in at, you need something like thrusters near the nose so that you can rapidly turn the front of the interceptor immediately.
Arrow steers from the back so the front is going to be too slow to turn on a super high Mach incoming missile's..!