Never been to Briar Hill specifically but sanatoriums are genuinely interesting from an investigation standpoint because you've got decades of concentrated trauma and death layered into one building. That east wing thing is worth digging into - do you know what that section was used for historically? Sometimes the "off" feeling correlates directly with a particular function the room or corridor had, isolation wards being a classic example.
What kind of off are we talking? Temperature variance, audio anomalies, just a general psychological heaviness? Because those three things have pretty different explanations and its worth being precise about it before jumping to conclusions.
I'd be curious whether anyone else who visited independently reported the same wing without being prompted. That's always the test for me - if multiple people flag the same location without prior knowledge of each other's experiences, that's when it starts getting genuinely interesting rather than just being atmospherics messing with your head.
Anyone got documentation on what Briar Hill's east wing was specifically used for? Patient records, floor plans, anything like that would help frame this properly.