Nieds and the CBA - Updated

So I see this quote from Bob McKenzie at TSN:

The Ducks' committed payroll for next season is the issue. With Niedermayer potentially returning, and with another year left on his contract after this season, the Ducks could not add him to the roster now without freeing up cap room for next season. In the new CBA, it's called 'tagging' room and the Ducks don't have enough of it next season to allow Niedermayer back on the roster this season – unless they move a player who is under contract for next season.

And since I'm a geek, I have to figure out what this means. I have a copy of the CBA on my desktop (doesn't everyone?) and I look up this "tagging" rule (50.5(e)(iv)(C)):

In order for a Club to sign such a Player to a multi-year SPC after December 1 of a season, the Club must have Payroll Room equal to or in excess of the Averaged Amount of the Player Salary and Bonuses for the remainder of such season. If, however, the Averaged Amount of the SPC exceeds the Club's Payroll Room for the then-current League Year, the Club may still sign such SPC, provided that it has Payroll Room and, if such Payroll Room is insufficient to acquire the SPC, it has an amount equal to one or more SPCs that will expire at the end of such League Year, in an amount equal to or in excess of the amount by which the Averaged Amount exceeds the Club's Payroll Room (the "Tagged Payroll Room"). Until such time as the Club has or makes Payroll Room in the current year in excess of such Tagged Payroll Room, the Club may not engage in any Player transactions requiring Payroll Room, including but not limited to, acquiring an SPC or "extending" or entering into a new SPC (the "Tagging Rule"). In the event the Club does have or creates such excess Payroll Room, it may use such excess Payroll Room in accordance with the terms of this Agreement.

It's like a friggin' obfuscated code contest. But I think I figured it out. The salary cap (around $51M) is actually pro-rated daily for the regular season, 187 days. So now that SN comes back, the Ducks don't pay him his entire $6.75M salary, it's pro-rated for the days he missed. That enables the Ducks to be under the cap this season, even though his average salary puts them over it. But the 'tagging rule' above says that if it's a multi-year deal, which SN's is, the team must also have salary at the end of this year equal to the amount they went over (based on his average salary, not the pro-rated one). If they don't, they need to clear out other players with multi-year deals before Scotty can suit up. I've tried running the numbers, but I don't see the Ducks over the cap this year, even taking SNs average salary cap hit, so I'm confused on that point.

For those wondering, the rule for single-year SPCs (standard player contracts) is that a club can sign them for whatever amount they want, as long as the total amount paid comes in under the cap. So if the Sharks have $1M left under the cap, they could theoretically sign Selanne to a $187M single year contract on the last day of the season, paying him $1M for a single day's work, and come in under the cap. This means the Roger Clemens idea is is full effect- there is no CBA prohibition on joining a team at any point of the season.

Update: It turns out the Ducks also need to pre-calculate the cap for all the years of SN's contract, and given the raises to Getzlaf and Kunitz next year, factoring in SN's numbers, they Ducks will by over. It's seems very odd the Ducks need to correct that overage now, but it is what it is. Thanks for the comments.