I think it was a mistake to spend 160 USD for renewal fees for two of the .im's. If Andres had given away all .im's for free and put the $160 up for trade, then we would be in a much better situation right now. Of course not to mention that somebody might have even offered a few bucks for the .im's before they were renewed.
Because the $160 is now lost and there is no way to recover it, the best thing Andres can do is to sell all .im's in an auction in this forum and put the money for trade.
Andres,
If you can spend 160 USD for renewal fees there is no reason to insist it is a matter of principle not to put money for trade. If the money comes from selling the current names then this should be OK. In economical terms I think they call it realization of stocks. So basically you are not putting extra money in it (unlike you have done before with the $160) but you just exchange domains with money.