A ziptie in a spyderhole may work as a modified wave feature. Though it seems a lot of people have experienced mishaps from doing it. I have a Spyderco Civilian which initially was quite hard to open with inertia or otherwise. The trick is to grip it underneath the blade's balance point, and like a lot of knives reverse inertia openings are actually a little easier. I also have a Benchmade 350 which was quite stiff out of the box, a little oil took care of that. Though recently, I think I'm beginning to head more towards Dale's direction...if you have time to access and open a folder, there are probably better courses of action available to handle the situation.