No, you've got it all wrong mate, they weren't trying to frame the husband, they were just playing a joke on him!
Seriously, this is the response from the police, as reported in Thaiger, when asked about the nine hours of torture and abuse they inflicted on the husband :-
"They were just playing a prank on Panya. They confessed it and said they did not do it seriously."
https://thethaiger.com/news/national/prosthetic-police-probe-thai-man-accuses-hopalong-cop-of-wifes-murder-confession-coercion
What a sense of humour those boys in brown have.