IF even 50% of various accounts (like this one, most detailed yet: http://www.telegraphindia.com/113010...p#.UOziJ47R1SU ) are true we most likely had usual ### for tat shenanigans until yesterday, but beheading is a definite extreme provocation. If that is what happened (that persons in Pak army uniforms crossed the border and beheaded one or maybe two Indian soldiers) then possibilities would include:
1. Hot-headed local commander
2. Hot-headed (and extremely provocative) move by the high command
3. Cold blooded high command move to escalate tensions in the cause of some domestic priorities (set stage for new caretaker regime? derail excessive Indo-Pak bonhomie from the civilian regime?). All of these options sound insane, but you never know.
4. Jihadi false-flag operation? After all, they carry out operations wearing Pak army uniforms all the time within Pakistan. Why not

Are there other possibilities?

3 would seem to be the real danger here. The rest can all blow over eventually.

What do people think?

Btw, from a military professional point of view, this will probably lead to a serious inquiry on the Indian side. If a pakistani soldier was killed 2 days ago, one would expect the opposing army to be extra alert. To get 2 soldiers killed can happen to any unit on military duty in hazardous zones, but to have the attackers behead them and take the heads away? that doesnt look good.