1) All his hopes and dreams were shattered as he was forced to choose between his career and his family.
2) All his hopes and dreams were shattered, as he was forced to choose between his career and his family.

I think in '1' 'as' could have a temporal meaning and could also mean 'because'.
In '2', 'as' most likely means 'because', but could have its temporal meaning if the clause has been added as an afterthought.

Is that correct?

Gratefully,
Navi.