I too have suspected that, however he has told me that the change of email is to protect himself from hackers. I would have to say that he is still the same manager and that nothing noticable has changed about him, however I may be delusional.
Changing email address shouldn't be a problem in all cases, aTriz is the manager of several short term ICO signature campaign and this post may be related to it.
I recommend for aTriz to post a verified message to suppress suspicions.
He already has a month ago to onnz423 (maybe 3 weeks ago). The message can be found here:
https://bitcointalk.org/index.php?topic=2172753.msg21895921#msg21895921PS: Before you guys start looking through my posts, I've already signed a message and sent it to omnz423 a couple of hours ago from a staked address back in 2013.
However it may be best to re-sign it as suggested by InvoKing.