Yes, but Spencer Lee would "only" be a 5th year senior. Kemerer and Eierman, if they chose to return, would be 7th year seniors, which is kind of crazy. Young, Marinelli would be 6th year guys.
Another example of the craziness.... Stevan Micic beat Nick Lee in HS when Micic was a senior and Lee a freshman. Next year, Micic and Nick will both be "seniors" in college at the same time, Nick a 5th year at that.