I don't see anything in the pairing that sets off any alarms for me. Personally I incubate at 88 just in case, so 62 days isn't terrible to me.
As far as the little one goes... They take a lot of energy to hatch and there's goo everywhere. Maybe they're just resting.
Once the little one is fully out of the egg, you can try giving them a little rinse with some fresh water to get the goo off and set him up in a 'nursery' tub of sorts. Damp paper towel and back in the incubator for a bit.
If the tongue still isn't quite normal after that, then that would be a time to consider possible issues. They may also be a bit fussy about getting started on food since the flicks are a big part of that.
I know that cinnamons and black pastels will sometimes have a bit of a tongue issue, but it's where the tongue flicks more upwards and almost curls back against the nose.
If anything, I would say the only gene that I would think that could possibly cause an issue may be spotnose since it's in the spider complex, but I haven't seen anyone say anything about tongue flicks, only the wobble in certain combos.
Fingers crossed it's just icky egg goo!