I had a Client with the exact scenario you are describing...the spouse was added at the last minute because he wanted her on the Deed. Anyone can be added to a Deed.

Your lender will have to approve it, as will the title company. Contact both on Monday.

It typically isn't a problem where I work but I am in VA and don't know MA laws..you will want to phone your closing attorney/title company asap on Monday. Explain to them how you want to take title. Don't wait till the closing table since everything is ordered and prepped in advance. There are most likely better qualified agents (located in MA) to address your question and may do so. Just remember to have your husband call the office Monday and clarify and give your info. Sometimes, one party ads the spouse to the title after closing but you have to go back and do it and it costs a little more.