、。
The way he's stumbling around is just way too dangerous.
Literal
Totter-totter [adverb-と] walk-around manner [topic-は], too-much dangerous [copula-だ].
フラフラ is a state mimetic for wobbling, staggering on unsteady feet; the adverbial と is the characteristic mimetic marker. 様 (さま) here is a noun meaning 'manner / way of being,' taking a verb as its modifier — 'the way of walking around.' あまりに 'too much / excessively' intensifies the following adjective. デンジャラス is the English loan 'dangerous' used adjectivally — a casual/stylized choice that replaces native 危険 or 危ない, hinting at an ironic/playful tone.