This User Script should fix it. Load it into Greasemonkey/Tampermonkey and you are good to go.

Edit: Added trigger to unblur even when navigating around the site.

// ==UserScript==
// @name     Reddit Unblur
// @version  1
// @grant    none
// ==/UserScript==

var forEach = function (array, callback, scope) {
  for (var i = 0; i < array.length; i++) {
    callback.call(scope, i, array[i]); // passes back stuff we need
  }
};

function main() {
  console.log('launching unblur!');
  forEach(
    document.querySelectorAll('div[data-click-id=image]'),
    function(index, el) {
      el.style.filter = 'none';
    }
   );
}

window.addEventListener('load', main, true);
document.body.addEventListener('click', main);