Tighten that Crank Arm!

I was pedaling down Fairmount Ave. (because Spring Garden was all tore up for some reason), after Laura and I went to go show off our Cross x checks to Eric and Peter, and my non-driveside crank arm fell off.
I was already pedaling in these:
So it was impossible to even attempt riding with one crankarm with a knee that was less than one week out of being surgically operated on. I was really far from Bike Church so I decided to jam a random twig where the allen key goes and hope the crank arm would stay on until I got to Bike Church.

Conclusion: A Random branch works as well as an Allen Key for ~6 miles.