You must have missed the part where I said to put both Sammy and Dumo on the roster. Your scenario has Sammy waived. I was never doubting that could happen.
With the upper limit I just showed you at 69,825,833, yes you can fit them both in.
CAPGEEK.COM ARMCHAIR GM ROSTER
CapGeek Armchair GM Roster
FORWARDS
Chris Kunitz ($3.850m) / Sidney Crosby ($8.700m) / Steve Downie ($1.000m)
Patric Hornqvist ($4.250m) / Evgeni Malkin ($9.500m) / Beau Bennett ($0.900m)
Pascal Dupuis ($3.750m) / Brandon Sutter ($3.300m) / Nick Spaling ($2.200m)
Zach Sill ($0.550m) / Marcel Goc ($1.200m) / Blake Comeau ($0.700m)
Craig Adams ($0.700m) / Adam Payerl ($0.627m) /
DEFENSEMEN
Paul Martin ($5.000m) / Kris Letang ($7.250m)
Simon Despres ($0.900m) / Christian Ehrhoff ($4.000m)
Philip Samuelsson ($0.550m) / Rob Scuderi ($3.375m)
Robert Bortuzzo ($0.600m) / Olli Maatta ($0.894m)
GOALTENDERS
Marc-Andre Fleury ($5.000m)
Thomas Greiss ($1.000m)
BONUS OVERAGE
$0
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CAPGEEK.COM TOTALS (follow @capgeek on Twitter)
(estimations for 2014-15)
SALARY CAP: $69,825,833; CAP PAYROLL: $69,795,833; BONUSES: $240,000
CAP SPACE (24-man roster): $30,000
LTIR Maatta. There's your 23 man active roster. Send one of Sill/Payerl down and call up Dumoulin.
It can be done.