Is this possible to remarry and sponsor ex wife from another country?

The short answer to your question is: yes. The longer answer to your question is that in the application process after you re-marry your first wife, you may expect renewed scrutiny of your marriage to your second wife, who sponsored you for immigration benefits, since there may be renewed suspicion about whether that marriage had been bona fide. To prepare for that, you should plan to assemble a particularly strong set of documentary evidence about the bona fide nature of your second marriage, notwithstanding that immigration authorities already reviewed documentation about it in the past. Some immigration law firms, including mine, offer legal services on a "flat fee" basis so that a client will know the total expense from the very beginning, and a few immigration law firms, including mine, offer an initial consultation free of charge. [Note: This communication is intended as general information and not specific legal advice, and this communication does not create an attorney-client relationship.]

You can try. Be prepared to explain the situation and work with an attorney.