Quote Originally Posted by SouthernBelle
What kind of cleat is the first one? How many different kinds are there? I think both are Shimano.
I'm glad you were able to get off the bike without getting hurt!

I know of two types of SPD cleats, single release and multidirectional release. The first will only release with a heel twist to the outside the second also with an inward twist or by pulling up on the heel.

I did a web image search on "spd cleat" and don't find anything that looks like your problem cleats.

Hopefully someone else is a bit more knowledable about this.