We still are not really sure what Tsukishima's power is. There are a some of possibilities.
* Mind control
* Memory alteration (Kind of the same as mind control)
* The power of friendship, the ability to make anyone into a friend.
* An extension of the cutting anything power he is supposed to have.
It could even be that Aizen was not actually captured and that he's behind this. Or Tsukishima is Aizen's son (doubtful).
What is weird is that he actually cut Ishida and left a physical wound, but Chad and Orohime were not wounded like that. It could be that there are two Tsukishima or something different happened between the two attacks.
And wasn't Tsukishima's shirt stained with blood at Ichigo's house? Then why is it not at his bosses house? Did he change shirts before he got there?