TOS & WC is a very tricky thing..hard enough to get good & timely treatment with pvt ins... wc is a real pain.. mainly because it is so hard to dx & prove.
If you go forward with a wc injury claim...
Have you sought out a very good WC atty to represent you?
If your symptoms & pain levels are low/moderate or intermittent and you can afford to get by with 1 income for an extended amount of time, by all means quit, just to save your sanity.
Your new job will be focusing on your health & healing.
I did the wc thing, up to a point, but wasn't majorly disabled for the long term, like some that have posted in the past. I was recovering being off work & doing much self care & chiropractic & adv PT, which I found on my own, not thru the wc system.
I was only majorly disabled for a couple months - barely could brush my teeth, & trouble with other bathroom things

Barely could cook or clean...
I did get some decent PT so luckily those worst things resolved, but was still limited as to uses/time.
EMG pretty much just rules out that there is definite nerve damage already happening when it is positive.
What type of job do you do?