I posted this as a question to Stack Overflow http://stackoverflow.com/questions/27889989/stepping-in-sbcl-from-within-the-debugger (follow the link to see the description). Basically I'm trying to single step after hitting a break point with sbcl and Slime. I was able to do what I want in sbcl without using Slime by using 'start' debugger command. As far as I can tell, there is no way to use that command from the Slime debugger.
Can someone tell me if I am missing something obvious or if it is currently is not possible to step after breaking with sbcl and Slime?