Can access to a latrine be restricted without cause?

I am a SGT currently in the Army reserve. My reserve center is shared between my company detachment (90 personnel) and a small group of CID personnel (approximately 20 persons). A chief warrant officer has been designated facility manager due to his AGR status. As such, he has taken it upon himself to restrict my company from utilizing the male latrine (it is on the second floor of the building, and he dislikes our company being on the floor for any reason). This leaves our 90 soldiers with only the female latrine and a single toilet unisex latrine. As much as I disagree with this leadership style, it hit a new low this morning.

My unit was in the middle of a urinalysis when the CID group reported for duty. The warrant officer immediately restricted use of the male latrine. This left us with our much larger group, executing a mission essential task, to utilizing a single toilet latrine all because of a preference.

I have always viewed this as an abuse of power/position. This morning I have been trying to find doctrine or guidance on the subject, but have been unable to find anything. Is there a course of action I can take to correct this issue for my soldiers?