It's very difficult to judge an aircrafts attitude from the passenger cabin and almost impossible in instrument flying conditions. On the aircraft type in question you don't really get a 'very termporary failure' of an engine. It either goes 'bang' very loudly or it just runs down and doesn't start again. Either way, even with some fairly gross mishandling it's extremely unlikely that the aircraft would ever reach 45 degrees of bank, let alone 60. Even a significant wake turbulence encounter rarely pushes an aircraft of that size more than 15 degrees from level. I.m sure it felt like a lot of bank and the aircraft may have rolled rapidly in wind but I'd be extremely surprised if it ever got beyond a very routine 30 degrees of bank.