As a response to Guy Gardener's reflection on the actor...Unfortunately the actor had some sort of stroke that has reduced him to a semi-non-responsive state this past May.
There is an Alexander Enberg page on tumbr somewhere that says he spoke his first word. I think the main reason we haven't seen anymore of the actor is because...well, he's no longer able to. That's too sad, this man's too cute to be catatonic. I don't have all the details b/c his internet bios are sparse.
I've posted all the updates on my tumblr; the most recent being yesterday. He is fully out of his coma and is walking, talking, memory coming back, etc, but he is still going to be in the hospital for a while. What they discovered according to the updates is the cause for the stroke was hereditary.