Boyd has been a passenger since he scored against TO.
Boyd wasn't put in a winning situation spending most of his time on the 4th line. Seeing how Martin is cutting his bench in the 3rd period, the 4th line is only there to give others a break so nothing is expected from them. Same thing happened in Ottawa. So it doesn't actually matter who's not dressing up: Martin has no role for the 4th line.
On the other hand, he's losing help on the PK, something Boyd is able to help out with but that hasn't been a problem so far and the Coyotes PP is going nowhere.
One productive line and a good defensive effort is enough for now until we meet stronger teams.