you can... if you have the free cells
no, i know. part of the gimmick of freecell is that the height of the stack you can move is limited by how many free cells you have — here, if you had another black jack, you could move those cards by putting the 9 8 7 in the free cells, moving the 10, then restoring the 9 8 7 on top. some implementations are nice enough to do those moves for you automatically, but it's not strictly necessary. and if a freecell implementation lets you move a stack of like ten cards around then it's not actually freecell
(it's certainly inconvenient having to do it by hand, don't get me wrong, but it shouldn't fundamentally alter the difficulty of this particular game)