pone55, "solo 401(k)" is a marketing term, nothing more. As Bill notes, when you have a single participant in a 401(k) plan, you have a "solo 401(k)," if that's what you want to call it. What is it you want a new plan to do that the old plan can't?
Respectfully disagree Tom. If under the terms of the plan as legally adopted deferrals could have been made, the issues with failing to have the proper administration in place are irrelevant.
and to be clear, the 60 days starts when the loan is offset, not when the 1099-R is received. The original language in the question leads to this cautionary statement.
Bill, you are being way too nice here. There is such a fundamental disconnect here between what the OP is asking about and the real world that I am almost speechless.