I've been a chronic Marleau owner for many years in my one-year leagues, and if there's one thing I know about him, it's that he fizzles down the stretch.
Perhaps this year will be different since it's a shortened season, but if it were me I'd definitely be looking to sell high.
And yes, you are over-thinking it - sell high while his value is inflated
2013 Bay Street CBS Playoff Cash Pool - $100 buyin
12 Teams, Points Only (G/A = 1, DG = 2, W = 2, SO = 1)
The Motherpuckers (5 NYR, 2 PIT, 3 VAN)
Forwards: Neal / Iginla / Nash / Richards / Stepan / Roy / Higgins
Defense: Del Zotto / Garrison