Bank of Canada's talk, not action, keeps lid on C$

By Andrea Hopkins OTTAWA (Reuters) - Canada's central bank head whipsawed markets on Wednesday when he mused about considering a rate cut shortly after holding rates steady. Governor Stephen Poloz's revelation that the central bank had "actively discussed" adding stimulus sent the Canadian dollar tumbling - just as he intended, according to some financial market players. "It was shot across the bow at the currency, which is currently trading at slightly elevated levels to where it should be and