I'm learning aerobatics and one thing they teach you is that the stall, more than anything, is associated with stick location. At 0g or +4g, Vs or Vs0 (bottom of the green or white arc) is completely meaningless. So as long as the aircraft is trimmed for a reasonable approach speed and you're not pulling the stick hard into your crotch (in case of a yoke, into your armpits), you can't (or rather, should not) stall.
In the circumstances, what you did sounds perfect. Find a long runway, nail the approach speed to something safely above the stall, flare and cut the power just inches above the runway. Keep pulling until you get strong signs of stalling behaviour, or where you feel that the aircraft is done flying. Then put her down gently.
If you're worried about the undercarriage not being locked, you might actually want to shut the engine(s) down completely while holding off, so that the props are not turning. If the gear fails, at least you're only shearing off one or two prop blades, not all of them, and are not shock-loading the engine. But I admit you have to have the spare mental capacity to do that.
Don't worry about keeping the runway occupied after landing. It's your emergency, not the ones in the circuit.