Did my wife's Employer breach her non-compete agreement?

My wife signed at non-compete agreement at hiring as a Sales Rep. with base salary, comissions & expenses and related insurances including health. After 4 years, the owner of the company forced her to go exclusively comission based & she lost her base salary & all insurances. Yesterday (3 years later) she received by "e-mail" a memeo from the company owner that he was going to take all her exisiting accounts and make them "house" accounts and she would have to start over from "0". I beleive this falls under the inability to earn a living; Unreasonably restricting an employee's rights; Imposing an undue hardship on the employee. Thus, I beleive that the non-compete should be null & void - Please advise.