It doesn’t change the fact he could’ve taken some action outside of ordering a full deployment. He didn’t.
Nor was this an aberration. The following year, after already seeing the consequences, they passed another law preventing any discretionary use of funds by Ford to prevent a communist takeover in Angola. Communists took over Angola.
It was not Ford's fault, it was all the congress, and before that Nixon having the bad sense to break laws and get caught.