you do understand that to "get them back" as you say might take a LOT longer than the 5 days that we have until the NO MORE TRADES goes back into effect right?
1) I understand that some people may have more than 5 cars "loaned" out (not "shared" online, but actually sent to others). I get that. I have more than 5 cars out right now. What I also understand is a little concept called "prioritizing"; if you couldn't get all of them back, which ones are most irreplaceable to you?
2) There is no "NO MORE TRADES" going into effect. Again, prioritize. Cars that are worth well under a million credits? Don't worry about those. Concentrate on the really hard to find stuff, the rare LMP cars, the Group C cars, etc.
Point being, don't just give up. If you can't save everything, don't panic, or you'll end up not saving anything.
At present, it looks like I'm going to "lose" three X2010s (I sent one to each of three other accounts my family has on our PS3), a Courage-Judd GV5 '04, and XJR9 LM, a Toyota GT-ONE, and a Formula GT. I've got time to get five of them back, though. The X2010s cost more, but I can replace those at the dealership. The FGT I can usually pick up in the OCD. So I'm concentrating on the Courage, the XJR, and the GT-ONE, because I don't find any of those very often.
You have to decide for yourself which cars are most important to you, and be willing to write off the rest. Maybe PD will relent, but don't bank on it. They don't often do the logical thing, do they?