Actually stuff like this does work on them, remember all they know is that book, it is all they care about, they read it every day, anytime they have free time. They pray 5 times a day. Pigs are dirty animals and being near one is a sin and could jeopardize your chance of going into Jihad heaven with all of those virgins.
Burying their bodies with pigs and killing their families would deter them. No one would sign up for a mission if they know that is what their fate would be.
No, it won't. Jihad trumps all.
Any Westerner who thinks Muslims soldiers are going to run screaming away from pigs like vampires from a crucifix had better come up with a Plan B.
Educate yourself on that book they read every day. There are a lot of exceptions to the rules, particularly when it comes to killing infidels.