How to dynamically remove a stylesheet from the current page

Well, assuming you can target it with jQuery it should be just as simple as calling remove() on the element:

$('link[rel=stylesheet]').remove();

That will remove all external stylesheets on the page. If you know part of the url then you can remove just the one you're looking for:

$('link[rel=stylesheet][href~="foo.com"]').remove();

And in Javascript

this is an example of remove all with query selector and foreach array

Array.prototype.forEach.call(document.querySelectorAll('link[rel=stylesheet]'), function(element){
      try{
        element.parentNode.removeChild(element);
      }catch(err){}
    });

//or this is similar
var elements = document.querySelectorAll('link[rel=stylesheet]');
for(var i=0;i<elements.length;i++){
    elements[i].parentNode.removeChild(elements[i]);
}

If you know the ID of the stylesheet, use the following. Any other method of getting the stylesheet works as well, of course. This is straight DOM and doesn't require using any libraries.

var sheet = document.getElementById(styleSheetId);
sheet.disabled = true;
sheet.parentNode.removeChild(sheet);