Getting On My Nerves: A Tingle In My Step

I created this post at Runners World. If anyone has any input on it please let me know.

I started noticing that when I am wearing my crocs or vibrams I sometimes take a step funky and feel a tingle going toward my pinky toe. I adjust my foot and it feels fine. This only happens once or twice a day.

Now, when I am walking around barefoot or running this doesn't happen. I know it has to do with the way I am walking in my shoes.

Could this be premature signs of something bigger? Should I be worried? Am I stressing because it will probably go away next week and be forgotten about?