If your husband is the only member of his PLLC, he does not pay himself and he does not give himself a W-2. A single-member LLC or PLLC is disregarded for income tax purposes. That means that your husband and the PLLC are one and the same. If he "paid himself" all he did was take money out of his own pocket and put it back in the same pocket.
If there are other members of the PLLC, then it is treated as a partnership for income tax purposes. In that case there are additional tax return requirements. (I assume that you are not a member of the PLLC.)
If your husband has been handling the PLLC income incorrectly, he needs to meet with an accountant to get professional guidance on how to handle the accounting and taxes for his PLLC.
