I'm a firm believer that the WAS is the one who invited the OP into the mix, and should therefore be the one to evict them.

Me 35/XW 33
S13 & S12
M: 10/17/98
OM & S: 07/08
D final 06/09/09
12/03/09 - 06/13/10 "Piercing"
06/13/10: Engaged to Re-marry 10/17/10
06/25/10: Expecting baby #3 2/14/11