When I list this block I get the following:
LIST 1 found
BLOCK REFERENCE Layer: "LOGOLOGO"
Space: Model space
Handle = 2e6
Block Name: "WSP_titleblock_A0$0$xref_BSR_titleblock_A0$0$AR-TBLOCK-DSA LOGO"
Anonymous Name: "*U5"
at point, X= 323.1466 Y= 59.5197 Z= 0.0000
X scale factor: 19.3040
Y scale factor: 19.3040
rotation angle: 0
Z scale factor: 19.3040
InsUnits: Millimeters
Unit conversion: 0.0394
Scale uniformly: Yes
Allow exploding: Yes
Visibility: DSA - SA
WHY are you exploding it at all?
And if you must 'explode' it I would suggest you insert this block four times; one each for the four visibility states it contains.
Then perforn an Edit in place and it will then break down into four different versions of the block.
Most optimal would be to NOT explode it at all.