How do I perform rollbacks and commits in mongodb?

help
1

Here is my goal: I have an enrollment page.

Template['Users.enrollment'].events({
  'click button[type="submit"]': function (e, template) {
    e.preventDefault();
    if (AutoForm.validateForm('enroll-account-form')) {
      var password = $(template.find('input[name="password"]')).val();
      var token = Session.get('_resetToken');
      var user = Meteor.users.findOne({
        "services.password.reset.token": token
      });

      Accounts.resetPassword(token, password)
      .then(function () {
        return Meteor.promise('updateInvitations', user._id)
      })
      .then(function () {
        return Meteor.promise('initializeUserProfile', user._id);
      })
      .catch(function (err) {
        // want to rollback here
      })
    }
  }
});

How can I pull off a rollback here? I tried something like this:

var rollbackUser = Meteor.users.findOne({ "services.password.reset.token": token });
// ...
.catch(function (err) {
  Meteor.users.update(userId, rollbackUser);
});
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