My impression of KP is always that he is looking 2-3 deals ahead. This could go along with it, where he always has two deals tied into a 3rd deal, and needs all 3 to go off in order to pull the trigger. In other words, maybe he has a deal for a decent PG moving Webster and Outlaw, but was trying to focus on getting a SF first, before pulling the trigger(Hedo, Prince). Most likely doing that so it didn't come off as a desperation act if he had no other SFs.
Generic example for those who play fantasy football: You have a decent deal lined up to land you a stud RB, but you are losing your top WR in the process. You're fine with making the deal, because you value RB over WR. However, if you then turn around and try to trade for a WR, that WR will now be viewed as your #1, instead of your #2(say you traded away Andre Johnson, and are looking to deal for...I dunno, Lee Evans or someone.). So instead of making the RB deal immediately, and then hunting for a new #1, you have that deal somewhat agreed upon with that owner. You then go shopping for a WR. But now, teams aren't looking at it as you are desparate for a top WR. They might think oh, he's just adding a #2 WR, so a deal for his #2 RB is a good deal. When in relaity, you are moving your 3rd RB for your new #1 WR. You pull off the deals simultaneously, and get what you want, while helping others along, just not lettign them on to what your goal in the deal is. Or who you might be moving.
Could factor in along those lines, who knows. Maybe he has had a deal lined up for Hinrich, but each time, he is looking at a secondary deal, and those secondary deals keep falling apart, which makes him back out on the Hinrich deal. Or whoever.