Okay I just got it working under IE9 using C# and the following code:
IWebDriver driver = new InternetExplorerDriver();
driver.Url(YOUR_URL);
driver.Navigate().GoToUrl("javascript:document.getElementById('overridelink').click()");
And now it will go to the intended page. For Java it’s as simple as:
WebDriver driver = new InternetExplorerDriver();
driver.get(YOUR_URL);
driver.get("javascript:document.getElementById('overridelink').click();");