I think they just forgot about how the tech worked and hoped viewers would too, so that they could switch HR with Iris.
Why would Barry need to go into the speed force? Why does there always have to be someone in there? That seems to be a changed premise from previous seasons. The speed force existed fine before without there needing to be a prisoner, or even when Barry went back in time. Why suddenly now that Savitar has blinked out of existence does it become unstable and threaten to engulf the world? Savitar didn't even exist in seasons 1 and 2, and certainly neither Jay nor Wally were occupying the speed force in place of Barry.
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ok I'll answer this part it's not that anyone alwaysneed to be inthe spped force it's as I said up top with thomas
they made the speed force buzzoka and there's was the two crsy
tals the one the caitlin kept which savitar was using and the one that the threw into the speed force after juline found it the same one the latter of which was orginally from future barry that made the mistake sending it into the past for julin to fine.
now the crystal was supposed to be the prision
bud sad they made the mistake putting thing into the speed force cause the claimed it would be like throwing it into space. yeah that was their big mistake there. like there seeing that that are other speedters runing through there and another of other complications . the thing that left over crystal that savitar escaped from taking wally was design that H.R. girl friend that future barry found to always need a prisoner. now the crystal on it's own being programed that way is one thing. but sadly barry and jayb made the mistake of putting it in the spped force of all place's cause they didn't think of all thing that this crystal should be destroy. they just wantedto toss it and forget. and tossing and for getting but you inthe arse. they just should had their buddy that have ship and missiles go to the sun and send a missile there. but it never came to their minds the same as we saw when they robbed argus and they saw argus had a meta human powers dampener.
no the othe chose would have been to do what thawn did in legend with the spear of destiny after he created the reality of doom world he had the workers of star labs build a well like particle annihilator that had the burning power of the sun 20 times over . if you can't have people send your problem with a certain object you want destroyed with the sun? then build your own sun.
But barry and the star labs team could think of this ether. so this is the conundrum.
it's that the crystal was designed that by the future version of H.R.'s girl friend and sadly Jay told Barry to throw the stupid crystal jail thing into the speed force.
and the Speed force was becoming unstable all due to the crystal jail device future barry had built via a future version of H.R.'s girl friend and current Barry mistake of putting the thing into the speed force in the current time/day. cause he couldn't be bothered to destroy it .
it was that some need to be inthe speed force it's cause of the mistake made by both barry and future barry with that crystal . it should never have been in the speed force. and the heroes have to realize you should just forget about some when a job's not finished . you fallow it through. destroy it. Don't toss it and forget.
<< Nothing good come for that latter chose.