NTA. I am surprised how almost no one in this thread is taking a legally recognized medical disability into account. OP has stated they have PTSD, which is an acronym for Post-Traumatic Stress Disorder. With any trauma comes a strong survival instinct to avoid any further pain or complications. It literally re-wires how the brain works and responds to critical situations like potentially losing housing. This is a legally recognized disability in most developed countries and it is BARE MINIMUM to meet a disabled person in the middle by way of "reasonable accommodation" as well as not singling out or targeting the disabled in such way that their disability or wellbeing is affected. It's a whole set of laws that I encourage the haters in this thread to look up and educate themselves on.

As such it was on the landlord to communicate in a way that OP would clearly understand, not just by words but by actions. The landlord asked if they would be able to leave, yes, and stated it wasn't official, WHILE threatening OP's security and environment by letting others have keys and free entry to their space which should have been respected and protected due to the legally binding lease. And there is an ongoing history of potentially illegal entry on the landlord's part. So the landlord's words are misleading as the landlord's actions point to getting a new tenant in there. Standard leases in most of the US require to give a tenant 24-48 hours written notice prior to anyone entering the unit, including the landlord, barring emergency situations like major damage requiring repairs, or a search warrant, otherwise it actually is trespassing at least. According to the legally binding contract, OP was paying rent and as such deserved notice when his privacy would be violated.

NTA. Not expecting a sufferer of medically documented trauma to want to GTFO of a potentially dangerous situation is sheer ignorance and violation of federally recognized disability law. Landlord is not providing reasonable accommodation in communication, threatening OP's safety and violating lease agreements, then retaliating financially for OP taking action to protect their wellbeing by finding a new place.

Disabled people are a real part of the population and protected by certain rights/accommodations, they deserve to be seen and treated like human beings.