Those who are talking sharia in Nigeria are really just politicians exploiting what they think is available. But if it should turn out that there are in fact whole sections of the country which believe that it is legitimate to chop off peoples hands because they stole a hen - if that should really turn out to be the genuine belief of responsible, educated people in the North than I would say there is no chance. But I do not believe that is the case. The sharia was always there but it was never force onto non-Muslims and it was not ever applied in the area of criminal law.