If you need to refresh the view every time you navigate to it, the easiest way to achieve this is to set data-reload="true"
in the view definition:
If this doesn't work for you, consider creating a separate model for the BlamList view, define the blamListSource within it and use the set
method inside the BlamList view's show
event to re-populate the DataSource, this will update the model and the ListView will refresh automatically:
// make ajax call here. Use e.view.params() to retrieve the data you passed from your previous view (the blamId)