In the shortcode? At this moment, no. But you can always filter either sul_user_query_args or pre_user_query. I will consider adding support for the WP_User_Query parameters… it shouldn’t be overly hard.
Since I’m not a web developper, I don’t really know if it’s correct, but it worked for me.
I had a list of registered users (mainly contributors, but also 3 admins including me) and I didn’t want to appear in this list. So the only solution for me was to only exclude my profile (ID), not a type of users.