Following are a number of back-translations as well as a sample translation for translators of Deuteronomy 27:15:

• Kupsabiny: “‘Cursed is anyone who makes an idol so as to worship it in secret. God hates those shaped things.‘ Then all the people are to respond, ‘It is/shall be like that!’ (Amen).” (Source: Kupsabiny Back Translation)
• Newari: “Cursed is anyone who makes an idol a thing detestable to the Lord, the work of Craftsmen secretly set it up.
  Then everyone must say, "Amen!"” (Source: Newari Back Translation)
• Hiligaynon: “‘Cursed is the man who makes whatever gods made of stone or bronze and worship them in secret. For this gods which were just made by man the LORD detests.’ Then all the people shall-reply, ‘Amen!’” (Source: Hiligaynon Back Translation)
• English: “‘Yahweh will curse anyone who makes an idol of stone, or of wood, or of metal, and secretly sets it up and worships it.
  Yahweh considers that those things, made by humans , are detestable/disgusting.’
  And all the people must reply, ‘Amen/We want that to happen.’” (Source: Translation for Translators)