Regret to hear of your situation.
You are not likely to get sued, but more likely to loose your Earnest
deposit, in the event you have removed all your contingencies.
If you have not done so, then you have a great chance of backing out
of the contract.
You may also want to check with your partner's employer if they can
keep him on the job till you close the deal. As to get a Home Loan you
need to have a Job, to qualify.