Apple - How do I disable mobile Youtube redirection on iPad?
In short: no, you can't stop it. It's Google re-directing you.
You can work around it though. You can scroll down to the very bottom of the page and tap the "desktop" link, which will take you to the full desktop version of the site. If what you want is the YouTube app to open, then all you can do is copy the name of the video from safari into the YouTube app.
I know what you mean about it not loading the videos. It's annoying!