Yep, after adding Macko today we have 39 guys on the 40-man already. There are some obvious guys we can dump but I'm sure things are going to be tight when the offseason nears its end.
Just as an example, if we had kept Robberse (45 FV) and Kloff (40 FV), we might have ended up having to dump a guy like Otto Lopez (45 FV).
Maybe in the end that's what we should have done but if all you are doing is shuffling 45 FV prospects around when you trade for a reliever it does shine a new light on the trade and makes it more palatable.