Of course you can if you have a man sitting on the bench who steps in and does a job as well as he has done. And it is argueable that this has happened.
Nobody is suggesting that the team be dismantled (well some are, others think tweaks are in order lol), and I don't get the feeling that anyone wants to run Marvell out of town.
I think we have a nice problem at right back (or CB), but you always have to consider the possiblities of plugging up holes using a position you have good talent in. Especially in the MLS where salary caps interfere with building a great team and a player's value may be at an all time high.