He was briefly replaced by House of Lords drummer Ken Mary for the remainder of the US tour .
Accept 's career came to a sudden halt , when Stefan Kaufmann sustained a serious injury to his back during the tour in support of the album .
Stefan Kaufmann was briefly replaced by House of Lords drummer Ken Mary for the remainder of the US tour .
Accept 's career came to a sudden halt , when Stefan Kaufmann sustained a serious injury to his back during the tour in support of the album .