Per your original statement, your title company claims that this property needs to be in a land trust in order for the "C" lender to be able to start underwriting the loan. This was what I got from your explanation, but this will crate a problem, not just because of the shady appearance of the land trust, but because of the problems this will create on the A-B side of the deal..
The problem you will have, and what everybody is trying to explain, is "B" is not currently on title. Since "A" is still on title, the lender for "C" can not start the underwriting process for the B-C contract (which is not really true, but that is another story).
Now, if you were to have the homeowner move the deed into a land trust, then the lender for "C" could POTENTIALLY start the underwriting, but this would cause problems in the A-B transaction, because the property has changed owners from "A" to the land trust. This would then make your contract null, since there was a new owner (moving a property into a trust is deemed a sale in some, if not all states, hence a new owner). This would cause the short sale to start over again, for most lenders.
POTENTIAL SOLUTION: Contact the lender for “C†and explain the entire scenario, that you are purchasing the property via a short sale and then turning around and selling it to “Câ€. If you can provide the Acceptance Letter (with all prices removed), then that would also help show that this sale will go through, if they will underwrite.
If the lender for “C†will still not underwrite, then explain this situation to “C†and recommend a mortgage broker that he can use that will be able to underwrite while the property is still owned by “Aâ€. Remember that “B†has nothing to do with the issue in this transaction. The problem is you title company is stating the lender for “C†can not start the underwriting on the B-C transaction while the property is still owned by “Aâ€. This could just be your title company's belief, or they could have received this information from “Câ€'s lender. If the latter, then speak with “C†and explain that his lender will not underwrite until you are on title and that this scenario will not work for you. You require them to be able to close on a certain date and that whoever they use will need to underwrite the loan before you are on title. You should explain the A-B, B-C scenario, so “C†will understand why this is the case.
To break down your question to it's ultimate issue, you want to know how to get the “C†lender to underwrite the loan for “Câ€. Forget the land trust, as it will cause more problems than it will resolve. If your title company has a problem with this, then find a new title company. Any title company who states that you must have this in a trust to make this deal work is either ignorant of this type of transaction, or they are attempting to persuade you to do something that is not in your interest, but to their benefit only (providing them with more money).