GR translation: damn him to the knob of that nervous imperial staff

[Mike Jing]

V324.13-19, P329.3-9   At night down here, very often lately, Enzian
will wake for no reason. Was it really Him, pierced Jesus, who came to
lean over you? The white faggot’s-dream body, the slender legs and
soft gold European eyes . . . did you catch a glimpse of olive cock
under the ragged loincloth, did you want to reach to lick at the sweat
of his rough, his wooden bondage? Where is he, what part of our Zone
tonight, damn him to the knob of that nervous imperial staff. . . .

What does "damn him to the knob of that nervous imperial staff" mean exactly?
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