brakes went out while driving

[taser]

i recently converted my 70 k5 to discs up front.....tonite i was driving home and the pedal went all the way to the floor. used the e-brake to get home. when i got home i found the banjo bolt on the driver side had been hitting the control arm and it tore the banjo bolt right out. i'm gonna probably need a new caliper and banjo bolt, but can i grind enough off the control arm and banjo head to prevent this from happening again?? luckily not much traffic on the way home any help appreciated - todd