No, it does not remove your ex employer. What it does is change the separating employer. If you take a job now, after you have filed this claim and had it denied, you have to have what is called "reearnings" to begin to draw again. You'd do what is called re-opening your claim when you re-file after ending this new job (any time this year.) But you'll be drawing on the same claim, once filed, the claim is good for one year. It MUST be the claim used for one year. No choice, federal law.
To get to draw after a denial, you have to have more than xx amount of wages, and so much time has passed. In other words, you cannot get denied on your unemployment and go to work for your uncle Joe's pizzaria and make $900 in two weeks and then start drawing when he conveniently gives you a lay off slip. You have to work somewhere for so long, and make a certain amount of gross wages for a covered employer (not just a cash or under the table job) and then be separated from that employer for a qualifying reason. in ohter words, the next job you take, you have to be laid off due to lack of work, or terminated and a decision made by unemployment that it was through no fault of your own.
Your next employer would be on any claim that you file a year from now. But for the next year, the claim you could draw regardless of circumstances, is the one you set up when you were fired from this employer.