Disagreement

[Dukat]

My brother and I were discussing the NFHS test and had a disagreement about the wording of a DP/FLEX question and wanted everyone’s opinion on who you feel is right. The disagreement is not on how the rule is applied but rather the wording of the question. It stated that when the FLEX bats for the DP the role of the DP is "terminated"

OK we all know that when the FLEX bats for the DP the roster goes back to 9 at that point but I say that the word terminated means DEAD and never to return although we all know the DP can return and FLEX go back to the 10th spot therefore the ROLE of DP was substituted and not terminated. He states that since it goes from 10 to 9, at that point, there is no DP but rather just another player batting their position thus at that point the role is terminated. Which interpretation do you feel is right?