what ever it was wrapped in when it was thrown stopped the spoon from comming free and priming it... they prolly just pulled the pin and threw it rag and all!!! what ever it was wrapped in when it was thrown stopped the spoon from comming free and priming it... they prolly just pulled the pin and threw it rag and all!!!I heard on the radio today that the grenade's failure was due to "shallow penetration of the firing pin", which apparently was caused by the improper release of the arming mechanism. In other words, it sounds like what you describe -- that the spoon got hung up in the cloth and that that messed up the mechanics of the firing pin somehow.