In terms of "what can we do", it may be time to ask the league for an exemption to sign a 16th player. Such exemptions are very, very rare, but in our case we have something like 6 legit injuries (Shaq, JO, Semih, Marquis, Delonte, and maybe Nate.) We can only field a nine man roster, which the league can't like seeing.
The league might still deny us, because only two of the injuries are going to be "long term" from here, and none of them are season-ending (supposedly).
(Keep in mind that this is different than an "injured player exception", which we couldn't use until next year, and which we probably wouldn't qualify for anyway.)