Just found this on Reddit, suddenly it all makes sense,
http://www.reddit.com/r/Planetside/comments/2apb8i/twitter_mhigby_new_rule_if_youre_standing_next_to/cixgjmc?context=5
Basically the grenade model is stuck to a giant beach ball meaning that when you throw it anything that hits the giant ball section will result in a deflection.
http://www.reddit.com/r/Planetside/comments/2apb8i/twitter_mhigby_new_rule_if_youre_standing_next_to/cixgjmc?context=5
Basically the grenade model is stuck to a giant beach ball meaning that when you throw it anything that hits the giant ball section will result in a deflection.