I find it slightly odd that special forces are sitting there on top of a wormhole that leads to one of my worlds when they don't attack in general. I'm going to guess they couldn't get to where they wanted to? Also, I'd guess the odd carrier behavior (where the carriers re-appear right after you pop them, taking the ships that just spilled out and putting them back into a brand new carrier when total ship count on the planet is too high, even though you are shooting at them) happens only to special forces since those carriers don't combine their carried ships into higher marks when popped, as far as I could tell.
That's a lot of special force ships. Cleared them out once already before engaging and destroying the first AI homeworld a few hours ago, that was a pretty massive battle on it's own. They seem to multiply at a very rapid rate after the additional AIP. Since they don't cross into human-owned worlds, it seems quite possible to 'trap' them, even if by accident as appears to be the case here. (special forces did not respond/show up to killing the 2nd AI homeworld, even though it was a fairly lengthy battle. I guess they were all stuck there.)
I didn't really notice it before, but there are quite a few areas where the AI is cut off from the rest of it's planets. If special forces are spawning on multiple planets that are 'cut up and carved out' like this, do they create their own little pools in their local area, or do they all attempt to reach their 'rally point' anyway, and if they fail, just kind of stand there looking menacing but not doing much?