I could be wrong, as I said it's been a long time, and I mean like 7+ years since I did the quest in that way. In fact I'm not even sure there is a fourth option, every WT I've checked say you either kill Throg; lure him out so Wheeler can kill him or persuade Throg to escape.
To succeed in persuading Throg you have to have expert persuasion, but I assume you already know that.
[QUOTE=Darth Gavinius;1096098]Distrbution of games, is becoming a little like Democracy (all about money and control) - in the end choice is an illusion and you have to choose your lesser evil.
And everything is hidden in the fine print.[/QUOTE]