Remember, the working assumption for some is that Lockett will graduate prior to the beginning of next season and thus he'd be able to find an almost sure-shot way to have immediate eligibility at another school without a hardship waiver.
If* Lockett had been planning to leave ASU for quite some time (which is my feeling, but nothing more), it might be more accurate to say that he is transferring from ASU because he wanted to get out of there and play elsewhere. At this point in time, a big factor in deciding exactly where he wants to play is the location of his family.
Now, if I am ASU I'd much rather describe the situation as, "the young man is leaving because of a family medical matter, period" instead of, "yet another good player is leaving our program because he'd rather play elsewhere... oh and by the way, now there is an family illness that is playing into the decision on where he'll transfer and even if he didn't want out of our program, he'd be looking at transfer options"...
My take on him and the U is that he's not the best fit for the Gophers right now. If he has a strong desire to be in the Twin Cities because of the medical concerns it would be great if they could find a way to fit him at the U and keep everyone in the program happy, but I don't think another wing is what Tubby needs (unless they are a big time sniper from deep).