I think "found" her because he grew tired of waiting for law enforcement to. He wanted to leave the state and for some reason he believed he would be able to. Which in itself is bizarre IMO
I think he carried her upstairs and put on that performance because he thought that's what he should be seen doing.
I don't think he did it to purposefully contaminate. That was a unintended bonus. IMO
I feel Patsy was putting on the performance of her life. Oscar worthy.
BBM
I agree. If his carrying her was about contamination, why wait so late to "find" her? If he waited too long the cops may find her and there may be no opportunity to contaminate.
I think I am too easily tempted to think it was purposeful contamination because the circumstances seem to suggest he wanted witnesses of him with JB. It could be the evidence was never on his mind and this was always about the drama he and Patsy could play out in front of friends and LE.