It's pureed. I'm pretty sure it won't stay contained, but you're more than welcome to try and report back.
I'm having trouble organizing all my thoughts on this, so bear with me...
I've brewed a bunch of spiced ales, ciders, and meads, and I've never used a pre-blended spice mix. I use individual spices, and usually purchased in whole form. In various brews I've used [Saigon] cinnamon sticks, whole nutmeg that I grate myself, whole cloves, ginger that I grate myself, molasses, brown sugar, honey, and vanilla beans, as well as other pre-ground spices back when I started brewing.
It's been very hard to nail down the exact spice profile I want when adding spices in the boil. Freshness of the spice makes a HUGE impact on the amount of flavor it contributes. For example, freshly ground nutmeg has waaaaay more flavor than pre-ground nutmeg, like WOW. Therefore I'm pretty sure following spice recipes is completely pointless because results will vary dramatically. Combine that with the fact that we all have different tastes... In my opinion, you're better off controlling the the amounts yourself judging by your palate using the particular spices you have.
So, if you're like me and want to go through the effort to tune the spice profile to your preference, I'd strongly suggest making hot spice teas and dosing the beer at packaging. Otherwise it's a total crapshoot.
Individual spices:
I've used straight molasses, and it's really good right up until it ferments out, and then it's quite terrible. Brown sugar seems like it contributes good flavor though, which doesn't seem logical. Maybe only very small amounts of molasses are ok.
For vanilla I cut up the beans into small pieces with scissors, put those in a jar, and cover with bourbon. Apply the lid. That gets gently stirred on a stir plate for a couple days, just enough speed to keep it all moving.
For ginger, the length of the boil affects how spicy it is. If you like the heat, use a shorter boil, otherwise boil it longer.
Heat seems to bring down the spicy hotness of cinnamon also.
There are several types of cinnamon, so make sure you have the one you want. You can break up the sticks to increase the fresh flavor without needed to grate them.
Be very conservative with freshly grated spices. They are very potent. I learned that the hard way by adding fresh ground spice in the boil based on a previous non-fresh spice amount.
Spice flavor in general does seem to hold pretty well through fermentation, with the exception of molasses, honey, and probably vanilla.
Not trying to derail the thread, but I use a completely different grain bill than the OP.
Article:
https://beerandbrewing.com/brewing-the-perfect-pumpkin-ale/
Recipe:
https://beerandbrewing.com/perfect-pumpkin-ale-recipe/
I obviously don't follow everything he suggests exactly (I can't even find the particular pumpkins he recommends), but the grain bill, yeast, gravity, and IBU in the recipe are excellent imo. I'm sure this would be a great beer even without the pumpkin and spice.
I've only done 2 step mashes ever, so I can't really comment on that.
Hope that answers everything! Cheers