Defense can be worked on as you progress. Unlike hitting where the pitchers improve as you move up, defense remains somewhat the same. Maybe his future is at 3B or even 2B? Either one would still be just fine for this organization as they are somewhat thin in position players at pretty much every position. Also, Tony G in Erie went down for the season some time ago. You'd think maybe they'd move Hollimon up to at least High A and get by with whomever in Erie.
Also, this isn't a fluke from Hollimon. He almost did it last year too in less playing time for Oneonta, missing by only 2 SBs. 13 doubles, 10 triples, 13 HR, 8 SB. I find his versatility very intriguing. This kid isn't getting any younger, I think he should be challenged a bit. He may be an underrated prospect, or he may just be beating up on younger competition.