Someone may have mentioned this but I missed it among the 6000 other glitches.
This has happened twice now, where it gets to half time in a game, where you can see you team line-up in the tactics window thing on the left, and it shows that mine and another guy's ratings are now 84 instead of 88 as they should be.
And as that was the last game we played last night, when I check Pro Clubs Head it even says our ratings are still 84 now! What the hell? The actual player stats are all still the same, on there at least. No idea if we were getting our true stats in-game though.