Things have changed in the last year at
Disneyland since the introduction of Maxpass.
There are now 2 ways to get Fastpass
1. The regular FREE way, insert your park ticket into the Fastpass machine and you receive a Fastpass paper ticket. Before Maxpass, this Fastpass paper ticket was collected by the CM and you did not need to produce your park ticket. Now that Maxpass is in uses, the Fastpass paper ticket is basically redundant, and is just a reminder. The Fastpass is actually loaded electronically onto your paper park ticket. At the Fastpass line the CM now scans your park ticket instead of collecting the paper Fastpass ticket.
2. PAY for Maxpass. This is an electronic Fastpass system which connects to your park ticket via your phone and an APP. Once you are in the park, you connect your park ticket to the App and then you can buy Maxpass. Maxpass allows you to get Fastpass tickets via your hone from any location in the park.
As both Fastpass systems are connected to the paper park tickets, technically yes you can exchange park tickets with your husband to use the Fastpass ticket he is entitled to. However, multi day tickets have your photo connected to them. This means that when a CM scans the ticket your photo shows up on their screen. I do not how CM's would deal with you using your husbands ticket for Fastpass and when they scan the ticket his photo shows up, not your photo.