Setting aside how ridiculous this effort is on substance,
I thought congresscritters were not subject to recall. They can be expelled by the House itself, or possibly impeached-then-convicted (although the impeach-ability of a congresscritter remains an unsettled question).
You are right on the money. Congressman, nor Senators for that matter, enjoy the same sovereign immunity as the President. So, they can be indicted, tried and convicted in a criminal state or federal court.
As for removal from office, the Senate's rules are very well-defined. The House's are as well, and in fact it's a little easire to expel a sitting Congressman. Just ask Jim Trafficant, former Dem Rep from Ohio. The Code of Conduct for a Congressman is very clearly defined in the Congressional by-laws. However, only the US Congress can remove a Representative.
Representatives are not subject to recall of any kind.