Thats why it requires a jump check equal to the larger creature's AC. Its a cinematic, acrobatic attack like taking a leap off a wall to change the angle of approach.
I posted my action. I take things into account like flanking, so unless you just want us to go in post order instead of initiative order, I've been waiting. I think it will go much faster using post order than having to wait on a single player for actions, but thats the way I think all PbP games should determine initiative anyways for the sake of time. Rolling initiative is to bring order to a room full of voices that all want to do things at the same time.
Laying out a schedule for posting monster actions really helps too. For instance say you'll be posting the first set of giant actions in 2 days @ noon EST and the 2nd set of giants in 48 hours later. Players that post that day or the next go before the 1st set, then they go and the players that have not gone yet get another day to post actions before the 2nd set, then any complete slackers will go last. This can put back the sense of immediacy in some small way that a tabletop session has.
Just brain storming here ;p in an effort to lessen the likelihood of the game stalling for months again.