Agency’s “Callousness, “Disturbing Attitude,” and “Abhorrent” Behavior, which Caused a Contractor to Lose His House, Equipment, and Business to Creditors, Amounted to an Abuse of Discretion and a Violation of the Contract’s Implied Duty of Good Faith and Fair Dealing; ASBCA 60235, Appeals of North American Landscaping, Construction and Dredge Co. Inc.