Limiting loans and non ERISA status

[30Rock]

Is it acceptable for a tax exempt employer with a frozen 403b plan with multiple prior vendors to limit loans and hardships to only a few vendors, so in essence turn off loans and hardships from some vendors, esp in order to save on cost and prevent compliance problems?

It appears FAB 2010-01 does allow a sponsor to do so and still maintain non ERISA status.

Any thoughts would be very welcome!