A senior bank regulator was removed from his job after being accused of helping mortgage lender IndyMac Bancorp alter its records so it appeared to be in better shape -- weeks before it was seized by the government. The Office of Thrift Supervision has reassigned its top West Coast official, Darrel Dochow, who was also a controversial figure in the regulatory lapses surrounding the savings-and-loan crisis of the late 1980s. In a letter sent Monday to Sen. Charles Grassley, the senior Republican on the Senate Finance Committee, the Treasury Department's inspector general wrote that the federal OTS allowed the bank...