Several people have suggested vacuum.  You might be
able to use that in conjunction with pressure, either
from air (low pressure, high flow or you will blow
seals) or from flushing a liquid through the case.
I would use something oily... Canola oil is cheap...

(I've done my share of equally stupid things!)

tabe johnson/87 westy

PS  Apologies to all for my rant to Eric.  I shoulda
kept my mouth shut.