Okay.. so I went to HobbitCon and i talked with the actors a bit, and then William Kitcher (Bifur) asked me something. "Did you notice that the axe in Bifur's head is not there anymore when the company says goodbeye to bilbo ?" he asked. I answered "No." then he Told me that In the Extended edetion You see then part when Bifur loses the axe out of his head and at the verry end he is also able to talk again .
Look at Bifur... no axe