I just had a thought what if once the shield was down they took up defensive positions around the orbit of DSII and when DSII goes Bang it tears through the remaing fleet of Star destroyers ect in the process also?
So help me out on these lines....
Yoda back Turned "Somthing For you I have...."
Crystal fles across the room towards luke then we cut to lukes hand holding the crystal....
yoda speaks again over this shot of luke holding the crystal
"Help you it could...Yes"