This is by far the most infuriating bug I've experienced so far. I've heard many people having issues with pathing AI on the intro wagon ride but I've never expected it could be this serious.
It's seems after allowing me to create a zillion Stormcloak characters and escape, the Imperials have finally decide to take revenge by making my journey to the headsman block a complete nightmare and intentionally getting us stuck. I had to literally go through the intro like 7 times for the Imperials to finally desist the ride to hell
Here are some shots of the poor Stormcloaks who can't even go to their deaths peacefully.
http://i.imgur.com/IpOBEAr.jpg
http://i.imgur.com/Ov7ic1G.jpg
http://i.imgur.com/h1dZke0.jpg
http://i.imgur.com/6s4t3DB.jpg
Even general Tullius and the lot are getting impatient
http://i.imgur.com/l551L8g.jpg
http://i.imgur.com/jAWOyE8.jpg