I dont think they should be charged. This is boxing, not figure skating. Give Haye was acting like a douche, but Chisora shouldnt have gotten out of his seat. I think the people that were holding the press conference should have had a little more control of the situation. Did no one think that it may be a good idea to stop these guys from squaring off?
In principal yes, they are both grown up men and showed in that situation that they wouldn't mind getting physical, but breaking a glass bottle on someones head is a criminal offence and thus a state attorney must initiate a court inquiry. Even though if the case is likely to be dropped.