This is an outrage!
I was a little surprised to find the tip bent at 90 degrees when I was finished, but I guess the open knife did spring out of my hand and fall on cement at one point. May have been a factor.
r8shl's right; it will get used this way. That misbegotten mutation of a pen blade added too much weight and bulk, especially considering I wasn't able to soften the spring much. Sooner or later I would have broken the pen spring and arrived here anyway. (Or broken something else; it's a very rugged spring.)
I also found a way around peening the spring pins, to avoid splitting the wood. I just nipped them off, poured super glue around them, and filed them smooth(ish). The action is surprisingly good, considering I've made gaps through which you could drive a coach and four horses. The pull is lighter, perhaps due to undersized pins, though I thought they were right at the time. All in all, not bad for a troglodyte.