He just needs to do whatever needs to be done so the pain goes away and further damage isn't done. The ASG is coming at a great time, giving him and Kobe both time to rest.
i badly injured my hip about 5 or 6 years ago and its never been the same, it causes back problems often and it clicks and there is nothing i can do about it. it is bearable though, but i imagine if you were the size of andrew bynum it would be a lot worse. he should sit it out for as long as possible.
Which is why I'm freaking worried cause it might turn something more than minor and be just nagging at him whole season.