Hi there, Tgia! Welcome to Dreamviews~
It's pretty cool that your husband is a natural lucid dreamer All newbies (or everyone, for that matter) should keep a dream journal. As for your attempts to shared dream, that's pretty awesome ;P For your question, when you say 'blocked' do you mean things you cannot remember consciously? For that, yes, i would say so. For example, there are faces of people i do not remember clearly consciously, but in my dreams, i will be able to remember their face. (I'm not even really sure if that just made sense..)

Look forward to seeing you around