Ghar1ne can absolutely help with such an injury, growth hormone is infamous for it's healing properties. Running a cycle of Ghar1ne, Elim1nate, and LJ100 would help with healing, keep bloat and water retention to a minimum, and keep natural testosterone levels high without being suppressive. However, you could stack any of the other testosterone boosters you mentioned as well without ill effect. Now, for the important question, insulin sensitivity. It sounds like you take quite a few supplements to help with insulin sensitivity, and being pre-diabetic I think that's a great idea. Excess growth hormone CAN cause insulin sensitivity issues in some people, however it's typically associated with high dosage exogenous Growth Hormone usage, as in injecting actual Growth Hormone in large dosages. Ghar1ne works by causing your body to release larger amounts of growth hormone, but not to the extent of injecting Growth Hormone. So one cannot really compare HGH to Ghar1ne accurately in terms of insulin resistance.
I agree with both recommendations here, solid choices.
Ouch, man. I've had quite a few injuries in my time since starting training, and I know the feeling. Well if you decide that Ghar1ne isn't for you due to concerns over insulin resistance, and don't mind mildly suppressive compounds, Ostar1ne is quite well known for being beneficial to joints, tendons, injuries. There are many logs out there with people talking about how it's helped them recover quickly, and take away discomfort or pain from old injuries. Personally, if I had an injury at this point in time, and I'm not concerned about suppressive substances, I'd stack Ghar1ne and Ostar1ne for a one-two combination to attack it.