I dropped my Kyocera Echo recently, and shattered the Gorilla Glass - it can happen. 
On the trip, I got a sliver of glass in my finger. Once back, I grabbed a packaging tape dispenser, that lays down the big 3"-wide clear tape, and rolled it from one edge, down the length of the shattered face, and off the next edge.
I used a credit card to smooth it down, and a manicure tool to trim the tape by simply starting at one edge and pushing it along the desired cut line (one of the notch-ended ones, like the blue one 2nd from the right in this picture).
On the Echo, the screen has two curved insets, so a simple razor edge might not have done as well. Easy!
Now, why this is so awesome: it went down smoother than the protectors I've paid good money for, and much easier. The tape "gun" is the trick; applying it by hand wouldn't have been as easy.
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