Sounds like he damaged the lid switch. This stops the wash and spin cycles when you open the lid. It may not be broken, just knocked out of place. You will most likely need to remove the top of the machine to get at it.
Parts listed below for model #lat9306aam
Lid switch kit Number: 22001967 $28.53 from Sears Direct
Manufacturer authorized substitution: 12001908 may differ in appearance, but is a functional equivalent to prior parts including 22001967.
Scott Zomb1e, December 2010