De-compile NSIS-Uninstaller

[Mosestycoon]

Dear folks,

is there a way to decompile an unistaller package built with NSIS?

This question has a special background:
Yesterday I called the uninstaller of "myDevStudio" which IS a pretty nice tool for building *.nsi, BUT this f***ing little tool killed several systemfiles (e.g. NTDETECT.COM, NTLDR and all the funky *.sys stuff in the root-directory). It told that it did that after pressing the "details" button of the uninstaller...(and voilà, it did)

That's not very nice of course, because this took me about 15 minutes to re-establish my system.

No, seriously:
If this is build in the uninstaller to look, search and delete these files, this tool should be banned (AND I WILL DO THIS, E.G. POSTS IN PUBLIC FORUMS...)
and I would like to verify this, or is the uninstaller spread wide open to infect itself by a virus, and showing this under Uninstall "details".


So is there a way to check this?

Thx
Mo