They are, of course, stuck with Verlander, Cabrera, and V.Mart for better or worse.
Upton should be tradeable for the majority of his deal.
Zimmerman might also be if he can stay healthy.
Kinsler and Sanchez are off the books soon enough, so not a big long term deal. Same can sort of be said for Martinez, it's just semi-short term sunk owner money.
They'll really have to be proactive and bail the boat aggressively once it starts to sink. This will mean getting whatever they can in exchange for whichever of those contracts they can move. I too would tie myself to Miguel Cabrera for life, but the Verlander contract really sucks.