Well, yes.  The game mechanics regarding 
Change of Heart are different, as the monster is attempting to return to a place that is no longer available.  It cannot stay on the opposing side, it cannot return, so it goes to the Graveyard.
However, the way 
Possessed Dark Soul works is more similar to the example I was thinking of.
Lets say you have 
Possessed Dark Soul and 4 other monsters on your side of the field.  Your opponent controls multiple Level 3 or lower monsters.
The controlling player chooses to tribute PDS to activate its effect and take control of the low level (3*-)monsters on the opponent's side of the field.  Only one space is available (that one vacated by the tributed PDS).  The other Level 3 monsters are destroyed, due to the mechanics.
This sounds very similar to tributing a monster for the effect of 
Enemy Controller and then blocking the space up with a monster Specially summoned via 
Call of the Haunted.  
The monster is prevented from going over due to a lack of space.  Just like monsters from PDS that cannot go over due to lack of space.
The monster targeted by 
Enemy Controller should, IMO, be destroyed by the same mechanic.