@Evan Blade you can pull one off the net or BP file place BUT you should take it to a local real estate attorney.

There are much straighter and lighter trees that grow faster available for dimensional lumber: firs, spruces, and various other pine species.The rafters are not the biggest issue here -- a sturdy rafter structure is to be expected in a pre-truss structure, where simple solid rafters in line hold up the roof, not a complicated structure of thinner sticks taking up lots of floor space in the attic.You need to look at the attic floor from below carefully.

Get a nice flat blade steel chisel and you should be able to get the majority of the mud off.

If you can get a sawzall blade in between the soffit and cabinet you can cut them.

The only way to remove this from the wall is to use a diamond blade grinder and cut into this and score horizontal, vertical and diagonal lines and slowly carefully pry or chisel it out piece by piece trying not to damage the adjacent tiles. 

TOOLS REQUIRED-Post hole digger, long handled pointed shovel, baulk-line, measurement tape, power tool with plastic cutting blade, extension cords, concrete combination tub, 4' level.

Others have a tool that looks like a weed eater that has blades on the end they stick it in the tank and stir it up before pumping , Those guys will be more expensive , but worth it .

Same with ceiling fan blades and all the hard to get areas. 

Owning guns is a pain in the butt in CA, so I'm relatively light on the guns but have various bladed instruments staged about our home (that I own, obviously).The hoarding is the only thing you described that strikes me as unusual.This dude probably wants to do what is expected of him, which is not causing permanent damage to the property and pay his rent on time, in exchange for basically being left alone to quiet enjoyment of the unit.

And 10 metal blades , cut it up and put the sludge in buckets .