This language is in the Corbel Document
7.6 LOANS TO PARTICIPANTS ....For purposes of this Section, the term Participant shall include any Eligible Employee who is not yet a Participant, if, pursuant to the Adoption Agreement, "rollovers" are permitted to be accepted from Eligible Employees.
I think in absence of specific plan language, the plan administrator could interpret it either way. You would probably want to clarify it in the plan loan policy.