I agree with you entirely. Our biggest problem hasn't been who our right back is, its been that whoever it is has had nothing in the way of support. Spurs targeted us on that side, it was their first option on the majority of occasions. I 'think' it was Rooney out wide right in the first half, but he spent all his time in the middle of the park, where everybody else was. Martina was left wide open far too often. He often had to choose between two players to mark.
Martina isn't the quality that we require, I think we all know that, but he is the quality we currently have, so we need to help him where we can. We need to have players capable of offering his some sort or protection and support. I think you right that Lennon probably offers more of that than others at the moment.