I do not believe what they are doing meets the definition of Adverse Action. From 1002.2:
(ii) A termination of an account or an unfavorable change in the terms of an account that does not affect all or substantially all of a class of the creditor's accounts;
Canceling the program would affect all or substantially all of the borrowers within that class of accounts.
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The opinions expressed are mine and they are not to be taken as legal advice.