GR translation: back at the hospital

[Mike Jing]

P173.8-12  “I don’t know, man—no, I don’t,” flinging a fat slow-motion
arm out of his hedgehog-colored cape, back at the hospital, as they
walk in the falling snow—to Pointsman a clear separation, monks here
and cathedral there, soldiers and garrison—but not so to Gwenhidwy,
part of whom remains behind, hostage.

Does this mean that Gwenhidwy is mentally back at the hospital even
when he is not physically there?