My response was to a different post then OPUS 17. However when you do excess deferral to 401K you have to pay taxes on the amount plus any gain acquired or else you pay hefty penalties(6% for every year the money stays in your account). If you keep the money in the roll over during withdrawal you will be taxed again. I have reached out to the account administrator and there is a form you can file to remove the excess contribution from IRA and all this has to be done before filing your taxes.
