There has been a few other write-ups for the CTF and as I find them, I'll add them here:
Ryan Linn @ Spider Labs - http://blog.spiderlabs.com/2012/08/stripe-ctf-walkthrough.html
droogie @ IOActive - http://blog.ioactive.com/2012/08/stripe-ctf-20-write-up.html
I Have to highlight one particular young kid, Luke GB - Not only was he able to complete the CTF, but also worked with danopia to build a Bonus Level 8 Speed Round: http://level8-scores.danopia.net/ -- He also has one of the fastest scripts to solve Level 8 which can be found here along with his notes on the CTF: https://github.com/lukegb/Stripe-CTF-2.0