More Changes at SSH

Brian Brown and Deborah Kirdner? have gone from the web site.
I can see why Deborah may have moved on, ssh has become has a neurohormonal/receptor technology based company now, so someone more familiar with this technology would make sense now as regulatory head.
Brian Brown has gone. He was in charge of the fully implantable, the company flagship. Is this a concern or is it just bringing new blood to revitalise the project?