First of all, LeeJosepho, are you saying that it would frighten or intimidate you to be buried in pigskins? You're not a Muslim, or supersititious, are you? If the answer is "no" to both of those points, then in burying terrorists in pigskins, you're not disobeying "doing unto others", are you?
Secondly, this is the Russian government doing this, not average Christian citizens. Governments don't bear the sword in vain -- more Scripture for you -- so if it only takes something simple like a few pigskins to save many, many innocent lives, I say GO FOR IT! It certainly beats bombing!