First of all, if the company is not a partnership, but a corporation (C x A, SA, Ltd, etc. and has officially issued shares or ownership stakes) and YOU have paid up your portion of base capital when it was subscribed (or paid for stock when it was purchased) you are NOT resposible for the losses of the company. As was mentioned, your loss is limited to the original investment. You are not legally liable for any losses but you are legally entitled to the benefits (earnings) of the company.
Now if this is DR company, and the owners are doing some shady stuff, get out, and get out fast!!!! You better start running. You do not want to be involved in case any fraud etc is detected.
Well, maybe you can think about this approach how to get rid of your shares:
Create a shell company, with anonymous ownership, in Panama, Belize, BVI, Delaware, etc. Best is the company with bearer shares.
Sell the shares (those you want to get rid of) to this company for symbolic 1 dollar.
BURN the bearer shares of the offshore company!
Get some friend from far away to sign on behalf of the company as a director but without too much identification. Two days later the friend resigns as a director and he keeps a copy of the resignation letter, with a certified copy postage paid sent to the company's legal address (this is just in case, for such a case).
Best if done abraod. Have the shares sale contract notarized. If you know some notary (or somebody that is willing) you can get the contract notarized without the second party being present ("As seen on TV"... err.. in the DR). Get the stamp (apostille) from the Notarial Authority (e.g. in DR Procuraduria General) or embassy stamp from the country where the notary is localized if apostilles are not used by that country.
Now you have officially gotten rid of your shares and a shell company with a ghost owner is the proud owner.
You can sleep well, and your former partners cannot. Now if anything, something, is needed wjere all owners are required (e.g. tag-along sales, etc., bank contracts, anything) wish them luck contacting the new owner.
Some kind of a small vengance, this stuff...
Consult a professional offshore consultant.