Maybe I'm missing something obvious, why did you need to disengage the parking brake? You can change a wheel with the brake on, in fact I don't think I've ever done it with the brake off?
I'm all for the careful oldschool way.
But honestly I do that simply for the peace of mind :) A soothing personal idiosyncrasy inherited from my dad.
The thing people might forget is to clear the corrosion off of the wheel and hub which can be a problem if it breaks away as you drive.