FOREX-Yen rallies broadly after BOJ jolts markets with policy tweak

By Ankur Banerjee SINGAPORE, July 28 (Reuters) - The yen rallied hard in volatile trading on Friday after the Bank of Japan announced it will make its yield curve control policy more flexible, while the dollar held steady against most other rivals following better-than-expected U.S.economic data. Chopping and changing direction as traders digested the BOJ decision, the yen strengthened to as much as 138.05 per dollar before weakening to 141.20. The Japanese currency was last at 138.60, up 0.61% against the dollar. The yen was also broadly higher against other peers, rising 1.4% against the Australian dollar, touching near two…