@Bryan O. Agreed, we are talking about whether DOS can be triggered or not from a legal point of view (acceleration of note).
Re par. 18: Wow, that is very strict wording! However, I initially stopped at "...the intent of which is the transfer of title by Borrower at a future date to a purchaser.". Breaking this down, I think I am deriving at the following:
1) If Trust
a) sells an LLC (which the trust owns) to a third party (a person or legal entity that has nothing to do with the trust; this could, however, also be the Settlor of the trust!) with this LLC holding a property or
b) makes the LLC sell the property which the LLC owns to such a party as just described
then we are, in my opinion, without a doubt in the realm of "DOS issues"/note acceleration and within your quoted par. 18.
2) Let's assume that Trust is the (direct) owner of the property (i.e. property is, at that point, not held by an LLC which in turn is owned by the trust). Trust now wants to transfer ownership of property to LLC1 (for whichever reason, maybe because of commercial financing or asset protection) which is wholly owned by Trust.
From my point of view (I very well might be wrong here!) with #2 there would not be a change of ownership in this case. Why? Because even though the owner is LLC1 now, this LLC is owned by Trust. Therefore it's still "the Trust" who ultimately owns the property. In addition there was no sale: one cannot sell within a trust. Therefore there is no purchaser as described in par. 18. This might be stretching it a bit, but that's the result when sticking to the wording used, wouldn't you agree?
3) There are proposals to approach this whole topic of avoiding DOS with a trust while at the same time using a legal entity for asset protection. This is proposed to be achieved by having the beneficiary of the trust assign his/her beneficial interest to an LLC (outside of the trust). While this is all great, I see no point in doing this as I see no asset protection happening here, at least not when it comes to the trust assets (Trust is still the owner of the property and therefore liable; and such a trust does not offer protection). It would, however, achieve the goal of avoiding DOS. This simply because there was no change in ownership and/or change in borrower: it's still the trust and therefore the settlor as borrower who initially was vetted by the lender who is responsible for the loan. I might be missing something here, and probably are, but to me this does not seem to be a solution in achieving asset protection and is therefore a pointless move. But maybe not.
One should also not forget the idea behind the DOS clause. Because what's the goal of this clause? That's easy: lender has vetted borrower and agreed to lend to this specific borrower using a very specific object as collateral. If borrower relinquishes ownership in the collateral (= property), the parameters under which lender agreed to lend have fundamentaly changed. Lender has no interest in dealing with a new owner who now controls the collateral with the lender not knowing anything about this new owner.
Having said that, this is why - I guess - in praxi the DOS is not enforced when a person transfers ownership from his/her own name into a single-member LLC which he/she is the sole shareholder. This because the LLC's asset is the property and therefore a) the collateral hasn't really changed and b) the controlling person of the LLC (aka shareholder) is the same as before. This would, however, be different if there were other people involved and/or if the LLC were to assign interest to other parties etc. This, at least, is my personal opinion. This last paragraph is not what this discussion is about, it was just a closing remark deriving out of the logic behind the DOS clause the way I understand it.
Disclaimer again: the above is a theorization and my personal analysis/opinion. No one should take this as advice, nor is it in any way intended to be advice. Not to mention that it's probably wrong LOL. Use lawyers to get advice on this topic. We are just brainstorming.