It may be that you and that set-up are blown for the season with that gobbler. If he's on to you, and you've shown him all your calls getting him to come in may be very hard indeed. I would try hitting the other side of the roost or noting where the gobbler and his flock go after flydown and setting up along that travel route so that you can intercept him later on in the morning.
I would also look at calling very conservatively to this roost from here on out. A cluck hear and there, some scratching, some purring. You've shown your hand to these gobbler. Don't keep doing the same thing and expecting different results.
One of my faults early on was thinking I could replay a bad day and make things right. If I got busted on the east side of the roost on Monday, I might be back on Tuesday and hit the west side of the roost. Nope. Part of this was turkeys seeming to remember. Another part of this was they just were not receptive to my repertoire of calls that time of the season. What I've learned as the years go on is that if the roost is indifferent to my calling today, they may yet be receptive later in the season. I can think of a couple of instances where I got into a flock the first week and didn't have luck, but I came back and showed them the same stuff on the last weekend and got a hot response.