Martyn switched from Yorkshire to Merseyside and whilst his new club are now in the comfort zone of mid-table Leeds have sunk into the relegation mire.
Martyn said: "I do not believe they can play that badly again. They cannot afford to. If they play to their potential they will be okay.
"I think they can turn things around, I certainly hope so. You enjoy winning as a player but is not nice because they are my friends, they were my team mates, and you feel sorry for them at the end.
"I gave Paul Robinson a hug at the end, he let in four but he saved 20. He is going to find it hard but they have to dig in and find the strength to pull themselves out of trouble.
"They have got that belief in the squad, but it is getting the 11 out on the pitch to produce it on the day.
Martyn said: "I do not believe they can play that badly again. They cannot afford to. If they play to their potential they will be okay.
"I think they can turn things around, I certainly hope so. You enjoy winning as a player but is not nice because they are my friends, they were my team mates, and you feel sorry for them at the end.
"I gave Paul Robinson a hug at the end, he let in four but he saved 20. He is going to find it hard but they have to dig in and find the strength to pull themselves out of trouble.
"They have got that belief in the squad, but it is getting the 11 out on the pitch to produce it on the day.
"It will be hard for the Leeds fans to take. From my point of view, the reception they gave me was very touching and you feel sorry for them.