As in exclude all jquery you mean? How would I do that?
add
jquery.js
to the comma-seperated exclusions list.
Defer parsing of JavaScript
What does this mean?
Well, by default AO puts all JS at the very end of the HTML with a defer flag, allowing it to be loaded and executed after the initial page has rendered. But if you "force into head" to ensure compatibility with some javascript which does not like to be deferred, this obviously is no longer the case.