Sorry EA, you cannot "waive" an inherent law to every citizen in America, which is the right to sue anyone and (unfortunately) for any reason. They will get fucked for even having posted this idea.
I was offered a job at a tech consulting company, and in the agreement it stated:
"If terminated, you are not allowed to work for yourself or a competitive company within a 100 mile radius of (our) company"
This was not only an illegal agreement (I never took the job and pointed out to them it was an illegal statement on their behald), you cannot deny someone the ability to earn income and work in a competitive field. Therefore you also cannot remove the right for someone to sue you because they agreed to that on paper as it is LAW.
Also back in the 2001-2003 .com bomb days, temp companies, suffering from the recession/depression, were keeping people as "indefinite" temps. So you could work 10, 20, 50, 100 hours, forever, and never receive the benefits of a full time employee. I believe both California State and Federal laws prohibit this, and there is something of a 60-90 day temp employment before a company has to accept your as an employee, part time or full, or terminate you as a temp. Many companies were sued over this, even when people acknowledged and agreed to the work because they were desperate. More corporate exploitation yet again.
EA - just one of the worst mother fucking companies I have ever worked for. I hate them with a passion.