To me, this looks like pretty solid drop. even with the opponent with two checkers still on the 24. just look at the position if you dance and he throws a splitting number (4 or 1). the blot on the 8, and ecape are in imminent.
My hunch is that White is supposed to be on roll here, not Black as originally stipulated.
White on roll: double and pretty clear drop.
Black on roll: no double/beaver!
Ooops yeah this should just be white on roll without the cube in the centre - just screen capped it when cube was sent across and technically the action is on black to 'play' - sorry for the confusion.
Your broken prime makes this a take. Even if you don't anchor, it looks like your opponent's attack will run out of steam pretty soon and he may even have to crash because he can't escape your prime.