Aiden have posted an explanation for their recent tour cancellation which includes the news that guitarist Jake Wambold has parted ways with the band:

We have been consistently on the road traveling for the past 4 years. In those 4 years we have been in seattle a total of maybe 5 months. That's including time we spent in the studio making the "Rain in Hell" ep and our new album "Conviction". It's enough to make anyone crazy, and bring almost any kind of personal relationship to the brink of disaster. So we all felt inclined to take a breather for the first time in what seems like forever. And with that, we are announcing that Jake W is no longer apart of Aiden.

We will continue on as a 4 piece. I know this may come as a shock for some of you, and some of you could care less. I just want to say to everyone that this is by no means the end. This… My dearest friends is but a beginning, a new chapter has opened up for us and the fire you saw before will be replaced with a much higher level of intensity. (sorry to all the people who would like to see us to break up, you can keep on hating another day. Believe.)

The band released Conviction last year.