User blog comment:Cackling Shadow/Blue Beetle Betrayal/@comment-75.119.247.217-20130119001820/@comment-96.24.80.234-20130119212117

Voltage0215 said it best. :)

We aren't trying to absolve Jaime of guilt as much as it is the fact that the body structure of the blue beatle of the future doesn't match with Jaime's body structure. It might very well be Jaime in the future (and if that is the case, I would say that the scarab probably took over Jaime so that Jaime has no control over himself which would absolve him of guilt anyway) but there are still some questions about that.

Personally, I agree with the OP. I don't think it is Jaime as the blue beatle of the future but is someone else the reach chose for the job. I even think that Jaime is making a mistake by trying to remove it as that could be the event that triggers the reach appocalypse. I think Jaime needs to realize that he can "tame" the scarab and prevent the reach appocalypse but that another host would almost surely bring it on.