Rules questions

I recently ran 30 deathmarks in a hypercrypt list. It was mindnumbingly fun, and while I'm fairly certain I played correctly, I want to ensure that what I did was correct.

• As long as you deploy outside of 9" horizontally from enemy units, can you deep strike on upper floors of ruins?

I was regularly dropping 10 deathmarks on the top floor of ruins for plunging fire. It's fun when 12 point models get Ap-3 on D2 weapons with minimal effort.

• Can the monolith's ability (not the Hyperphasic Recall strat) pull friendly units that are locked in combat?

I baited my opponent into climbing a floor with a charge, only to strand him there in my next turn for free.

The game went really well. I was insanely hard to pin down, despite my opponent's best efforts and excellent luck in locking me in melee. The deathmarks ripped infantry apart at long distances. Imotekh the Stormlord and his retinue of 5 lychguard rescued my monolith from a melee of its own. It was a jolly old time.