src/dropbox.js
function unHookSync(rs) {
  if (! rs._dropboxOrigSync) { return; } // not hooked
  rs.sync.sync = rs._dropboxOrigSync;
  delete rs._dropboxOrigSync;
}
function unHookSync(rs) {
  if (! rs._dropboxOrigSync) { return; } // not hooked
  rs.sync.sync = rs._dropboxOrigSync;
  delete rs._dropboxOrigSync;
}
Unhooking the sync

TODO: document