There's a hidden nickel setting to keep the wifi alive, c.f.,
NickelMenu for an easy way to toggle it

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I can't vouch for what nickel does in debug mode, but inetd & sshd are the only network services started by this

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There's no real way to tweak that short of editing the startup script (
/usr/local/stuff/bin/stuff-daemons.sh).
There's an uninstall package bundled (in the KoboRoot tarball found inside the uninstall folder of the package).
On mobile right now, so I can't quite remember the paths, but it's probably somewhere in /usr/local/stuff or something ;p.
EDIT: There, links & proper paths

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