You can find the ‘DirectAccess Connectivity Assistant 2.0’ here:
This handy little tool is provided as an msi, which operates as a wrapper for the msu contained within. I was finding it hard to uninstall so I asked my colleague and software deployment expert and he provided me with this magic:
Which did the trick (at least for the x64 version).
This info came from https://support.microsoft.com/kb/940410 combined with some poking about inside the msi with 7-zip.