Lex is starting to worry me. As a control freak, it seemed uncharacteristic of him not to make sure Lois was indeed dead. All that obvious planning went for nought.But why kill(or in this case, try to kill) her?Controlling personalities are by nature, domineering. With her dead, what is the pleasure?
If Lex delegated the job to rid himself of Lois to others, it's time he hired better help.