Taaramäe (Intermarche Wanty Gobert Materiaux) more than delivered on Stage 3, turning on the afterburners with 2.8km to go on the brutal 9.3 percent gradient climb.
The move was too much for his break-away companions Joe Dombrowski (UAE Team Emirates) who would go on to claim second, and Kenny Elissonde (Trek-Segafredo) who was third on the day.
Taaramäe managed to kill two birds with one stone at the finish line - winning the stage and securing the red leaders jersey after a fearless ascent of the Picon Blanco to cap off a flawless day for the Estonian rider.
Looking beyond the stage victory, Keenan thought Adam Yates (INEOS Grenadiers) was "really impressive".
And he will need to be, as he now takes on the task of leading INEOS alongside Egan Bernal due to Olympic gold medallist Richard Carapaz being dropped by the peloton on the final climb.
It would seem that Carapaz's hectic last couple of months have caught up with his legs.
Yates on the other hand, has some of the freshest legs of the field with La Vuelta being his first major tour of this season.
The Brit showed promise riding at the head of the peloton to the summit, with a few cheeky accelerations to test the field and his legs.
So does Keenan think chinks in Jumbo-Visma's armour are starting to show?
"Jumbo-Visma we're a little disappointing today," he said.
"Roglič was isolated early and had no teammates with him at the end of the stage."
The Slovenian may have lost the red jersey to Taaramäe, but still had a solid day in the saddle - finishing with the main group of GC riders as only Enric Mas (Movistar) gained a few seconds.
But with his team cracking so early in the tour, it "will spell opportunity and optimism for all the others to try and stop him from winning three in a row" - according to Keenan.
The peloton now faces a couple of relatively flat stages back-to-back.
Will this give Jumbo-Visma enough time to recompose before returning to the mountains?
Roglič will be counting his lucky stars that his team can find their form come Stage 6.
You can view Keenan's analysis in full at the top of this article.
The Vuelta a España continues tonight with Stage 4, a 163.9km mostly flat stage with an uphill kick to the finish line from El Burgo de Osma to Molina de Aragón. Watch the race on SBS VICELAND and SBS On Demand from 2300 AEST live and free, with the coverage on the SKODA Tour Tracker starting from the slightly earlier time of 2250 AEST.
