i have a better solution, you say this happened with customize, right? well the first solution would just get you back to having the stock icons running on the springboard and i was leaving it up to you to figure the rest out. but this should work a lot smoother.
- in terminal, ssh into your phone (ssh -l root "phones ip")
- type the root password
- type /Applications/Customize.app/Customize then hit enter.
- this should launch the customize program and from there you can access rsbt to put whatever icons you want back on the springboard from hidden.
- when you are finished, press ctrl+c in terminal to exit customize as the home button does nothing when launching a program from the terminal
sorry i didnt think of this before. good luck