ThE sAgA cOnTiNuEs ...
I swapped out the lt1001 for a AD8624 an opamp that has "... been carefully designed to
prevent output phase reversal ..." their words not mine.
And the circuit still rails, this time sooner.
Also I got the materials to build a prototype. No guarantees by when...
You're assuming that the phase reversal claims are present in the models and behave like real world parts. Why would you assume that?
Opamp models can be extremely disappointing for anything other than their basic operation.. IMO, you may be just wasting time trying to get a model operate correctly with your circuit.
If you really want to know if your bootstrap can work in simulation, you need to develop your own model that has only the features you care about (say for floating, output swing, CMIR limits etc..).
Then later, when you care about other things that are modeled in the vendor model, then you can switch it and do non floating tests.
That or just start building a bench prototype. You could probably already have those tasks completed in the time it has taken trying to get your sim to work.
On the other hand, if you have a good ADI contact you can send them your schematic and they will explain why it cant work with the model and perhaps suggest something that will.