While I am truly sorry you have this trismus problem, it should from day to day - improve. Or, at least be pretty much gone within a week.
Very often, as Dentists, we have to keep your mouth open for a longer than desired time frame, and thus some soreness and muscle spasms can and do occur. Additionally, some Dentists are inadvertently more rough which can only, by accident cause soreness.
The crooked bite usually subsides day to day as well. The soreness from the injection site is undoubtedly, while caused by the injection, sadly merely being more tender to your mouth than what is typical.
My suggestion? I hate to say just "hang in there"... But in most all cases, where these similar situations such as those you have mentioned, DO indeed go away! And, generally such time taken to do so is a matter of days or a week, with generally you feeling a gradual improvement. So, I would say to you that while what you are experiencing is obviously highly undesired, and often not experienced, it sadly in a small percentage (maybe 5% or so) does indeed happen. Try to be patient (sorry that doesn't seem to help a lot), and realize that "this too will pass". I do indeed hope this helps you. Hang tough!