From the reports so far, this sounds like a dreadful accident and one of those "sh1t happens" kind of incident that occurs in wars. The guys needed help, called for it and the air delivered it as best they could. Unfortunate, even excusable perhaps. He was doing his best.
The incident involving the Canadians, the pilot was told NOT to attack, was NOT in any danger, took it on himself to go down into the "danger area" and let them have it. Culpably negligent. I undestand he appealed the decision and was given the same decision/response. He was a liability.