Kurt had recognized the French words spoken, but didn't have much time to make conversation once he noticed this shirt glowing, the same way that the other things glowed just before they exploded. Shocked and shaken, he immediately let go of Remy, stumbling away.
"Ach! Mein Gott!" Faced with the scare that his body might be blown to bits, not knowing how strong the charge actually was, Kurt forgot about his opponent and tore at the fabric, hoping to remove it, to no avail. There was an explosion, which threw Kurt backward, and the smell of singed fur.