Nevermind... I found my answer here:
showthread.php?t=114&highlight=search+results+show
1. Open the results page
2. double-click to edit the DataAsisst Search SB
3. Look at the trigger value... it should be something link "...$_GET["Search_x"]...
4. Make the show all link zero out the filter by:
<a href="Results.php?Search_x=0" target="_top">Show All</a>
That works. Hope it helps someone else.
D.