State tax filing

According to CA FTB publication https://www.ftb.ca.gov/forms/2018/18_1005.pdf  your type of deferred compensation is not taxable to nonresidents.  As to your second question,  it is straightforward to do in a Desktop version of TurboTax using the Forms View to adjust the numbers directly.  I haven't used the online version, which doesn't have Forms View, but perhaps you can change or remove the CA state of origin where you have entered the deferred compensation information.