Hoagies - Why is one so different?

Toast

I just made a batch of the same hoagie rolls that I bake regularly. One of the four came out very different from the other three and I didn't intentionally do anything different. Please see the picture and link to recipe in my blog post at http://weightloss-slim.fit/node/32130/hoagies-why-one-so-different%3C/a%3E%3C/p%3E%3Cp%3EPlease post any thoughts on this on the blog and thanks to Floyd and all that participate in this great site.

wayne