He's too hot, perhaps? High temp should not exceed 89-90*. Where & how are you measuring temps? (ie. if you rely on thermostat- and please tell me you're
using one?- but the actual cage floor may be higher than you think...so check carefully where the snake can touch.) His actions suggest he wants OUT of this cage-
& that suggests he may be too hot, esp. in light of your reported temps. Apart from that, it's normal for snakes to hide & for BPs to explore (hunt) @ night. Some
snakes do just want out regardless to explore, but it's our job as caretakers to make absolutely sure they have what they need in their enclosures, and BPs are not
really known for much "exploration". Excessive heat causes stress, thermal burns*, neurological damage & then death; it's crucial to get this right. (*is his tummy
pink any places?)