This is complete bull . I hate when teams lie their asses off about injuries. Manu supposedly just felt a little tightness the last time he played but "did not re-injure" the hamstring. Now he's been out like three games (missed four last time) and looks like he'll miss more with this "non-injury" than the original one. I know hamstrings are stubborn and really easy to re-injure, but just say he re-strained it already.
As for Duncan, I guess it makes more sense to be cautious, but I don't understand why Parker said on his radio show that Manu would miss the first game of the road trip and Duncan only two when it appears both will miss like 5.