Yeah, may as well.
Question: if I bury Grossman and Leino at the beginning of the season, will it count against my cap?
The cap goes in effect once the regular season starts. If you then bury them, they won't count against the cap, no. Given that the game doesn't normally let you SIGN players over the cap though, you can't, say, go 5 mill over the cap now, then bury them and be left with 1 mio of cap space. Instead you can spend to the cap, then bury them and you'll have 6 mio of cap only once the season starts.
For some reason, cap calculation is really odd though, and sometimes the game actually DOES let you spend over the cap, for whatever reason.
So, bottom line: No, they won't count against the cap if you bury them, but they will count against the cap all throughout offseason.
Also, burying 1way contracts is frowned upon, and if you ever call them up they have to stay up, because Waivers aren't active, so we have to self-regulate ourselves a bit here.