The electors are required by the Constitution to meet on a specific date for the purpose of casting their votes, and the only power Congress has is to determine when Congress will get together and count the electoral votes.
Congress has no more authority to participate in the deliberations of the EC than it does to participate in, or set the rules for an Article V state amendments convention.
No state EC delegation ever ‘ran away’ because the simple fact is that the duties of electors are defined by state statute. Replace the term ‘elector’ with ‘delegate,’ and you have a situation identical to that of an Article V amendments convention.
Delegates will serve their states. They will have no attachment to any statutory authority under the US.
Article V now, while we can.