I'm thinking Jehovah missed his target. You know how Jehovah kills lots of innocent people when he get pissed at something like:
*** w69 3/15 p. 191 Questions From Readers *** As a punishment for this sin Jehovah brought three days of pestilence that killed 70,000 Israelites. (2 Sam. 24:12-16) Was that unjust? Were 70,000 innocent people dying for the king’s error? The Bible plainly shows that we all are sinners deserving of death; it is only by God’s undeserved kindness that we live. (Rom. 3:23; 6:23; Lam. 3:22, 23) So those who died had no special “right” to life. Additionally, can any human today say for sure that those 70,000 were not guilty of some serious sin not mentioned in the historical record?
So I'm thinkin Jehovah wanted to zap the Kingdom Hall because they weren't preachin the good new enough so he shot a fire ball at them but the dam thing broke in pieces and fell short of it's mark.