insulin question

A patient had levemir 30 units ordered and SSI. At 2100 pt fsbs indicated patient should get 8 units regular SSI in addition to levemir 30 units. Pts blood glucose bottomed out that night. The next night fsbs indicated another 8 units SSI should be given. Patient has active infection. So MD on call ordered to give SSI as ordered and hold levemir, at another facility we would have done just the opposite or decreased both doses. Can anyone explain the rationale behind this to me?