Source: pp 253, 258. With Good Reason, An Introduction to Informal Fallacies (2000 6 ed) by York U. Prof. S. Morris Engel.
[p 253 :] Identify the fallacy of relevance—personal attack. mob appeal, appeal to pity, appeal to authority, appeal to ignorance, or appeal to fear—that is committed in, or that would result from, each of the following. Explain the error committed in each case.
[p 259 :] 42. Billy Martin, after resigning as Yankee manager. saying why he would make no further comment: "That means now and forever, because I am a Yankee, and Yankees do not throw rocks."
Conjecture: Please see the one here that pertains to all these exercises.
Attempt: By the Process of Elimination (because none of the other named Fallacies apply), I have narrowed the choices to, but cannot decide between,
'Appeal to Authority (in particular, to Tradition [pp 244-245])' : Billy Martin might be following tradition of never reproaching one's own team or employer.
or 'Appeal to 'Fear': Billy Martin might fear retaliation from reproaching the Yankees, or be threatening retaliation to those who do so.