Sometimes the low-tech ways are best: bash it with a rock, that'll loosen it.
2017 August 20, “The Observer view on the attacks in Spain”, in The Observer[1]:
Many jihadist plots have been foiled and the security apparatus is getting better, overall, at pre-empting those who would do us ill. But, they say, the nature of the threat and the terrorists’ increasing use of low-tech, asymmetrical tactics such as hire vehicles and knives, make it all but impossible to stop every assault.
