Can an attorney demand the following?

You need to get an attorney. Also a survey.

It sounds like it hasn't actually closed yet. Your paperwork is done but the seller's isn't. You don't get possession of the house until it closes

What are the problems of our aunt deeding her house to us for $1.00

It sounds like you're describing a sale of the remainder interest in the property for $40,000 (ie aunt retains a life estate, you only get the...

The language you quote is a warranty of title.

Can I be sued for not signing off on real estate if it causes the sale to fall through

Either you are a co-owner of the property or you aren't. If you are a co-owner, you can't be compelled to participate in a sale you never agreed...

Generally speaking, a gift is not a sale. A lot depends on the language in the lease. You should have an attorney take a close look at it.

Can the seller of a land contract sell his land contract

Yes, unless it is prohibited by the land contract (which is unlikely). It's similar to a lender selling a mortgage to somebody else. The buyer...

My father and I brought property father passed do I get ownership of father half

If you and father were joint tenants with right of survivorship, then you own the entire property. If you and father were tenants in common, then...

Can a property manager order a maintenance tech to break in my apt. And change my locks because I'm behind in my rent?

The landlord can't use self-help. Locking you out is a wrongful eviction. See Mendes v. Johnson, 389 A.2d 781 (D.C. 1978).

When a person owns property along with several others, is it possible to have your share in the property bought out?

Yes, you can sell your tenant in common interest, either to one or more of them or to a stranger. The risk of being co-owner with a stranger may...