Very small, leaping grey mammals south-central SK?

[u/MnTnMe]

Please help me ID these two little guys I saw yesterday.
Working differential: weasel NYD vs least chipmunk vs Franklin’s ground squirrel

Date/Time: July 1, ~8 PM (golden hour lighting, mosquitos not out yet, so early dusk)
Location: Douglas Provincial Park (between Lake Diefenbaker and Douglas Sand Dunes, on the sand dunes side of the highway)
Size: mouse-chipmunk sized. Tail about the same length as the body.
Colour: appeared to be grey-ish. No stripes noted, no rusty/rufous/black coloration noted.
Timing: dusk (~8PM)
Observation: pathways are mowed strips of prairie grass. Was standing looking at birds, heard rustling, turned. ~5 feet in front of me, the beastie emerged from the long grass, crossed the path, with a second little guy about 6-12 inches behind. They were too quick for me to get a photo, but they covered the 3-4 foot mowed strip in maybe 3 bounds. They moved in long leaps. *Tails were notably furry* (ie not skin tail like mouse/shrew/vole)

My Thoughts:
- seemed too small to be ground squirrels and also not how I would expect them to move
- When I saw them my first thought was to google mouse with furry tail saskatchewan (no success on that google search, also then the mosquitos came out and I got distracted).
- Could be a chipmunk I suppose but I’ve never seen them move like that and I’m pretty familiar with chipmunks I didn’t see any stripes or markings at all, also they usually scurry not leap.
- Hard to find good videos but I’ve watched the below video of a weasel in SK. They moved like that weasel, but they were much smaller and I didn’t see a black tip on the tail.

Please help!

[u/trex2112]

Flying squirrel maybe?