Court did not abuse its discretion in denying severance, as curative instruction sufficed to protect co-defendant from gruesome evidence against another defendant, despite mixture of questions at trial and the fact that his own attorney objected to some evidence against the other defendant.
http://www.ca5.uscourts.gov/opinions/pub/16/16-11731-CR0.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.