As the administrator of the community, you should be able to remove survey access for a member or a group of members using existing filters as the member/members might have fallen out of the specific criteria you had set for the study.
The administrator of the community will be able to remove survey access for a member or use existing filters in the community to remove survey access for a group of members.
You can remove survey access for a group of people by going to Invitation History under the send tab and hover over the more icon, you will see the Remove Access option.