[citation needed] Weinhofen replaced Curtis Ward in British band Bring Me the Horizon as a permanent member in March 2009.

He was featured in the music video for "The Sadness Will Never End", which was released following the departure of Ward, and recorded with the group on their album There Is a Hell Believe Me I've Seen It.

There Is a Heaven Let's Keep It a Secret.. Weinhofen rejoined I Killed the Prom Queen when the band reunited in 2011 to play on the Destroy The Music Tour.

[4] In 2012, Weinhofen had a guest solo spot on Mors Principium Est's album ...And Death Said Live, on the song "What the Future Holds".

In January 2013, Weinhofen left Bring Me the Horizon for undisclosed reasons, which made way for I Killed the Prom Queen to become a full-time band once again.