You just stated you posted everything mentioning the property. The fact is anyyhing you posted referring to the content of the trust was not quote and if obviously is not everything since all you posted was;
When spouse moves house will be distributed to beneficiaries.
If that is all it really says you have a lot more problems than you realize. For example; it doesn't say spouse gets to live in the property but somewhere along the line you figured a life estate was created. From what you wrote, that is far from clear.
You posted your interpretation of what the trust says regarding the property. Given legal documents can contain very subtle nuances where very specific terms make a difference in the interpretation, you are doing what you came here to ask about; an interpretation of the terms of the trust. If you are going to trust your interpretation regardless what anybody says, just save your money on an attorney since it doesn't matter what they say, you have already interpreted it yourself.
Regarding your questions to me that I missed until now;
Why I said you would end up at a lawyers if the trust retained title;
This is not a typical life estate. A typical life estate is where the tenant is given a deeded right of possession. It is a legally enforceable of possession for the duration of their life that is terminable only under very few and fairly well established situations. Along with that, the rights of the tenant and remaindermen are established through case law. The tenant has the full control of the property as if it was owned by them, including a right to exclude the remaindermen from entering the property if they so choose.
None of that is going to be applicable to your situation. The tenant has no title rights so right off the top, it makes it very similar to a typical landlord tenant relationship rather than a life estate. So, how are ant obligations regarding the property determined? Who is even required to pay utikities? Who pays for upkeep or major repairs? Does the trustee have any rights to ensure the property is not being destroyed? With no rules stated, it reverts to any applicable law on the matter or if none, to either an agreement of the parties or if an agreement cannot be reached, a courts opinion.
That is why I said you would end up at an attorneys office.
Why would an attorney write a trust with such a flaw; my first thought is incompetence. No attorney is skilled enough to practice in all areas of the law. Maybe the writer didn't understand trusts as well as he believed he did. I cannot give you THE answer but merely speculate as to what it might be.
Regarding who currently holds title;
If the property is actually in the trust, the trust holds title and the executor of the estate has no power to do anything here. The trustee controls what happens to property in the trust. If there is a deeded life estate, it is the obligation of the trustee to have a deed constructed thst fulfills the terms of the trust.
But it doesn't sound like there is to be a deeded life estate.
From your statement I wonder if the property was even put into the trust. I also have concerns about the qualifications of the executor. Have they hired an attorney to assist with probate? If not it is clear they need one.
How would the remainder of the life estate be calculated?
It may be wholly irrelevant to your situation. It is not clear from what you have posted but how it is determined is by using actuarial tables which determine the expected life of the tenant which the actual age is subtracted from resulting with the amount if time the life estate is expected to last