I am NOT still clear what u want to do actually.
But what I understand from your post, you may do something as below:-
1) Find the overlapped instance/objects using
2) You can use some thing like dbGetTrueOverlaps(cv car(obj1~>bBox) "VIA5" 0:5) to get the VIA ovelap objects. I assume VIA5 is drawing alyer in your process.
3) Then whatever you want you can do with it by using appropriate command.
a) If you want to do manually, then you can use Mr Andrew's code in the post to highlight the area to find the locations
b) For doing in the code you can delete using appropriate commands.