I also had a miserable time removing the bolster, all due to elastic stop nuts, the seeming mile long threaded studs and the after market car alarm. Now that the alarm has been removed everything under the dash is much easier.
There I was, seat out, in the lotus position working on the stop nuts when a piece of insulation fell into my open mouth. I thought I was going to die until I managed to wiggle out of the car and cough it up. Wear a mask or bandanna.