"I see mya88 mention the lack of a case in the event of successful obstruction of justice. Does that make any sense to you? That judges can acknowledge that a criminal has succesfuly tampered with a case. So they have no choice but to let him walk."
I personally think it would be very difficult to prove that Uhuru has been involved in obstructing justice. At best, but also quite difficult, the OTP could prove that GoK has been at it; but the problem would still be one of making a connection to Uhuru.
Nevertheless, if it could be proved that Uhuru had done it, then there is no question of him walking. Note that Bemba now has two cases: his original "crimes against humanity" one, and the new "interfering with justice". And it would not be surprising if the latter had some effect on the former. (By the way the OTP and Pre-Trial judge have a wry sense of humour: even though Bemba is locked up, a new arrest warrant was issued against him, and he was served in his cell!)
As I see it, the real issue now is whether the current charges against Uhuru are dropped permanently or whether it will be a "to be continued", waiting for when he is no longer PORK or until the OTP can get more juice. If the judges are sure that GoK has been interfering---we know it it has, but it needs to be proven---then it will be a "to be continued".
Also in that regard, while the focus is on the OTP, I think serious attention ought to be paid to the Victims' Legal Rep and whatever performance he gives. (The judges are very mindful of the victims' views.) Fergal Gaynor is one the best such reps the court has had, and he has shown that he is prepared to throw hard blows, even if a few land below the belt. It will be interesting to see how he does.