The 5 point anchors are high tech that allows you have dimensional resistance so stuff like portal storms are essentially harmless while active - as far as i recall.
You do have special labs where I have not taken a chance to explore without activating a properly functioning anchor because - well without spoiling- the area(s) breaks concepts of reality...
I can only assume from my perspective that the malfunctioning anchors are the remains of the unlucky sobs that did not survive experiments and in the process the anchors were damaged thus I assume the phasing of shrikes is when the anchors are malfunctioning and it taking advantage to phases about.