Hi Saga,
I'm surprised about your request. Why do you want these pictures (or probably any other for that matter) to be only available on slengpung? The idea is to provide the interested module listener with as much information as possible that is legally and publicly available on the net.
No offense but I cannot understand the notion of people asking to remove information, pictures, modules and what not about themself when it is freely available at many other places in the web. If you are uneasy about personal data floating around the web shouldn't you have taken care of it a lot earlier in the first place? Do you care to explain your motivation?
Regarding the Ex.handles I do not only put nicks which appear inside modules but also prefixes from the module filenames which musicians often used to distinguish from other artists in the Pre-Windows era, and any other aliases which are not necessarily related to the module tracking scene. The idea is to provide as much information as possible which for example helps to identify the creator of a certain module when no explicit credits are given, and to give the interested reader an idea of other areas, projects, hobbies etc. the artist is/was interested or involved in.