DarkSaint85
Bonified abstract
I'm merely pointing out that there are two sentences that're happening in the scene.
1: Wallace asks what did he do, Wally explains he used the formula
2. Wallace asks why he feels like a drain, Wally explains the combination strains the Speed Force.
It doesn't mean that he MUST use the formula to stop time. Moreover, you're assuming writers keep continuity in there head and are..
.as devoted as we are. Ah, yes, in Flash v2 #91 he did this, so I must do the same!! But you and I both know they don't.
I mean, in Flash #91 he doesn't even stop time. It just looks like it, which Wally acknowledges he's not stopping time.
So for Wally to suddenly say 'ooh yes, I stopped time ' kinda shows the writer has no real idea.
Which means our head canon of 'oh, there are SF users here, so he needs to do extra steps and add abilities to stop time' doesn't mean anything.
MOREOVER......Cosmic Thor isn't a speed Force user. So......swings and roundabouts, and moot, really. Wally doesn't need to worry about whether his family are here or not, because he's not trying to stop a Speed Force user.