There's an easy solution here: Load Google Analytics locally. There's no urgent need to load ga.js from Google's servers; there are benefits, namely speed, utilizing client cache, and getting updates, but its core functionality does not rely on where ga.js comes from.
Then, the only resource loaded form Google's servers is http://ssl.google-analytics.com/__utm.gif, and that's just loaded via a new Image(), so even if you MITM that resource request, it doesn't execute as a script or anything similar.
Then, the only resource loaded form Google's servers is http://ssl.google-analytics.com/__utm.gif, and that's just loaded via a new Image(), so even if you MITM that resource request, it doesn't execute as a script or anything similar.