Your "had free will" is key here, Robert. All angels when created possessed free will. The one-third or so failed their probationary period and are irrevocably damned. Unlike mankind, there is no redemptive plan for these angels.
Just as Adam "had free will" before falling and plunging all his progeny into sin. Original sin both as corruption stemming from our first father (Adam) and as an imputation of Adam's sin. Imputation means to "count as" or "to be reckoned as." So this view of original sin would say that Adam's sin is counted against us as if we had done it ourselves. The guilt of Adam's sin is counted as our own guilt, and we can be punished for it.
The unbeliever can only sin more or sin less and possesses no ability to do otherwise until God replaces their heart of stone with one of flesh. So yes, one may say, the unbeliever has free will, if one understands free will to mean choosing according to one's greatest inclinations at the moment one so chooses.
AMR
