If I understand the procedures and rules which apply to committees, you are right to say that this committee could study and vote on a motion which would reverse your decision on whether the amendment is in order or not. However, as Mr. Lee mentioned, the House of Commons could then reverse the committee's decision.
My question is in line with the one asked by Mr. Ménard. If the House of Commons did not reverse the committee's decision, it would create a legal precedent which could lead committee members, without the input of their committee colleagues, to table amendments which exceed the scope of the bill currently under study by a committee. In that case, the committee chair would then be forced to decide whether an amendment was in order, even if it exceeded the scope of a bill.