I have no idea where that 10 percent comes from but I do know the events of that night can be explained by several of those side effects.
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0000166/
aggressive or hostile behavior
believing things that are not true
feeling unusually suspicious of others
slow or difficult speech
The 10% came from your post, but here's a link that doesn't even assign a percentage to the psychiatric side effects because they are categorized as "rare."
http://www.drugs.com/sfx/adderall-side-effects.html