Rushed down the steep (hōrmēsen kata tou krēmnou). Ablative with kata as in Mar 5:13; Mat 8:32 and the same vivid verb in each account, to hurl impetuously, to rush.
Were choked (apepnigē). Second aorist (constative) passive indicative third singular (collective singular) where Mar 5:13 has the picturesque imperfect epnigonto.