Octalink crank arm splines stripped
I have a used Specialized Allez bike. I believe the crankset is a Shimano 105 Octalink v1 double (rebranded with Specialized logos). While riding today, my right foot pushed down, but my left foot did not rise correspondingly. Pulling out the crank arms, I notice the drive side splines were full of aluminum fragments. The BB spindle, however, looked just fine.
Of course, I'll have to replace it. But I'm curious, is stripping the splines off Octalink v1 cranksets typical? I don't really want to buy another crankset just to have this happen again. Or did I likely do something wrong? Put too much torque on the pedals? Overtightened the crank bolt? I'm not sure what could have caused this.
The alternative is changing the BB to another system. I'm tempted to go back to square taper since they are cheap and have been fairly reliable for me.