I suspect other Molinists do not hold to OSAS, but I could be wrong. So my question is this: Is Wesley's view that one can truly be saved but lose their salvation compatible with Molinism?
It seems that the Molinist could say God knew they would be saved and then fall away, so although they were saved for a time, God never considered them part of the elect. Perhaps the elect are only those who are saved and persevere in the faith till the end. (This is my current view "Wesleyan-Molinism"

**Edit**
I just found this quote:
"Of course, Molinism does not imply the doctrine of the perseverance of the saints. The defender of middle knowledge could hold that logically prior to creation God knew that there were no worlds feasible for Him in which all believers persevere or that, if there were, such worlds had overriding deficiencies in other respects. Therefore, the warnings of Scripture do not guarantee the perseverance of believers, for believers can and do ignore them. Nevertheless, it does seem to me that those who interpret the warnings of Scripture as the means by which God ensures the perseverance of the saints have abandoned the classic understanding of that doctrine and have adopted instead a middle knowledge perspective on perseverance." William Lane Craig