Evicting your (former) step-father

Not that it's anybody's business, but it servers as background... my mother and step-father have been going through a divorce... for THREE YEARS. For about the last year of it, I've been the almost owner of my mother's house, where I lived for a few years in high school. The back and forth of the whole process has dragged the effort out that long. Finally, the whole last week of May I was working the paperwork to refinance the mortgage in my name so that my mother, who gets the house in the divorce and will be renting from me, can live there in peace once this thing is finally over (though we're in what must be our tenth attempt at closing the deal).

So the mortgage process is almost complete, and the deed has already been signed over to me, which means here soon I'll have full run of the place. Well, a couple nights ago I was talking to my mother on the phone and she asked me, so when is he supposed to leave? You see, because he pays the mortgage, he has refused to leave, and my mother doesn't want to leave because she wants the house and has been afraid of losing it if she left, so they've been co-habitating in a war-of-the-roses atmosphere for three years now.

As it turns out, because my step-father-for-the-moment shows no near-term signs of vacating my property, I may be forced soon to draft an eviction notice. So when my mother asked me when he should leave, I told her once the divorce was final, if he showed no effort in vacating, that I'd send an eviction notice. And then, as the rightful property owner, I'd have him removed by the police if he didn't leave by the terms of that notice.

All I can say is that this is a strange turnabout that I would not have foreseen a number of years ago. My most memorable (adverse) incident with my step-father was during my senior year when he refused to drive me to school for a week because I was late for a pickup (not that I minded taking public transportation, but it was an hour-long commute via two busses, an "L" train, and still with about ten minutes of walking to get to my school from where we lived). So the fact that I may now have to evict him from his home of so many years is an interesting position to be in.